Monoprice 50-Watt Stereo Hybrid Tube Amplifier with Bluetooth, Line Output, and Qualcomm aptX Audio
Product # 16153
UPC # 889028042670
$139.99
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Is there an optical line output on this unit?
Jeff F
on Feb 24, 2019
BEST ANSWER: Nope, just pre level for say feeding a subwoofer and L\R speaker level. Only 1 set of RCA jacks for an input (labeled for CD but use them for anything @ line level). You can connect via bluetooth for your phone or something, so that's pretty much an input as well, just not a hard input.
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- John M on Feb 25, 2019
- Purchased on Apr 8, 2018
BEST ANSWER: Nope, just pre level for say feeding a subwoofer and L\R speaker level. Only 1 set of RCA jacks for an input (labeled for CD but use them for anything @ line level). You can connect via bluetooth for your phone or something, so that's pretty much an input as well, just not a hard input.
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- John M on Feb 25, 2019
- Purchased on Apr 8, 2018
No, the only outputs are a Pre Out L & R for output to a powered Sub woofer or other power amplifier. Two 5-way binding posts for the Right speaker and two 5-way binding posts for the Left speaker (impedance 4-16ohm). Very minimal outputs but very pleasing sound into a pair of B&W DM602 monitors and somewhat ancient B&W ASW600 sub. Suits my home office very nicely. A Schiit Mani pre amp feeds the CD input from my also ancient Dual 1245 sporting and equally ancient Shure V15-III.
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- irishjim on Feb 25, 2019
- Purchased on May 30, 2018
Bluetooth and a stereo set of RCA inputs.
This is a dependable amp. I have used mine to power set of speakers in my retail store. The amp is powered on 5 days a week ffrom 10AM to 6PM. No issues at all.
This is a dependable amp. I have used mine to power set of speakers in my retail store. The amp is powered on 5 days a week ffrom 10AM to 6PM. No issues at all.
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- Robert B on Feb 24, 2019
- Purchased on Jun 7, 2018
No Optical output. I have had it over a year and it is a great unit, amazing for the price.
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- John L on Feb 24, 2019
- Purchased on Apr 2, 2018
just the dedicated output for the subwoofer. All other outputs are bare terminals.
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- Anna Katrina M on Feb 26, 2019
- Purchased on Apr 20, 2018
No. Also, the 50 watts is into 4 ohms, not 8. Great sounding amp, though.
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- Jonathan R on Feb 24, 2019
- Purchased on Apr 8, 2018
No optical connections on this unit just RCA cables (in and out)..
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- Duhg on Feb 24, 2019
- Purchased on Jun 15, 2018
No, there is not an optical out line on this unit.
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- Mark A. R on Feb 24, 2019
- Purchased on Jun 24, 2018
No there is not. A rca pre out and rca line in.
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- duder1982 on Feb 26, 2019
- Purchased on Mar 19, 2018
No, just analog line output with RCA jacks.
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- Duhg on Mar 19, 2019
- Purchased on Jun 15, 2018
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Does it comes with a power cable?
A shopper
on Aug 8, 2018
BEST ANSWER: To be honest, I can’t recall if it came with a power cable, but it takes the same power cable as my PC power supply. I know, that this isn’t gereatly helpful... the cable connector is a C13 connector.
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- Mark H on Aug 8, 2018
- Purchased on Oct 29, 2017
BEST ANSWER: To be honest, I can’t recall if it came with a power cable, but it takes the same power cable as my PC power supply. I know, that this isn’t gereatly helpful... the cable connector is a C13 connector.
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- Mark H on Aug 8, 2018
- Purchased on Oct 29, 2017
yes it dose. its a great amp for the price. had it over a year running pioneer book shelfs and a 10in sub
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- Anonymous S on Aug 14, 2018
- Purchased on Sep 20, 2017
Yes, it comes with a power cable, and it's a prey decent one, too.
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- Craig C on Aug 8, 2018
- Purchased on Aug 23, 2017
Yes. It comes with a detachable power cord.
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- James B on Aug 8, 2018
- Purchased on Oct 28, 2017
Yes it comes with a IEC type power cable
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- Bentley W on Aug 8, 2018
- Purchased on Aug 28, 2017
Yes, detachable power cable include
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- John W on Aug 8, 2018
- Purchased on Sep 4, 2017
It does come with the power cable.
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- will j on Aug 8, 2018
- Purchased on Sep 17, 2017
Yes, it comes with a power cord.
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- James M on Aug 8, 2018
- Purchased on Aug 28, 2017
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Can I hook a Fm tuner to this amp?
New User U
on Mar 5, 2019
BEST ANSWER: That shouldn't be a problem if the tuner has standard unbalanced RCA connections. However, that would occupy your only line input meaning that to switch between the tuner and, say, a CD player, you'd have to manually disconnect one to connect the other.
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- Michael S on Mar 5, 2019
- Purchased on Jul 15, 2018
BEST ANSWER: That shouldn't be a problem if the tuner has standard unbalanced RCA connections. However, that would occupy your only line input meaning that to switch between the tuner and, say, a CD player, you'd have to manually disconnect one to connect the other.
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- Michael S on Mar 5, 2019
- Purchased on Jul 15, 2018
Yes, you may hook up one (1) line level device to the "CD" input and one (1) Blue tooth device. I use an external Line Level selector switch on mine and hook up a DVD player and a TUNER and my DISH box.
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- Edward W on Mar 5, 2019
- Purchased on Sep 7, 2018
Yes, there is one set of rca inputs. I use a splitter for CD, tape deck, turn table. Hope that helps
Fyi this unit is amazing. Been years since I have heard such great sounding music thru it
Fyi this unit is amazing. Been years since I have heard such great sounding music thru it
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- Scott M on Mar 5, 2019
- Purchased on Sep 11, 2018
That's going to depend on the FM tuner. If it has a stereo red/white RCA out, then yes. Bluetooth may be possible but I wouldn't bet on it.
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- Brandon B on Mar 6, 2019
- Purchased on Sep 5, 2018
it does have RCA inputs jacks so if your tuner has RCA out, you're set. Or if your Tuner has Bluetooth out you could connect that way too.
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- JAMES M on Mar 5, 2019
- Purchased on Jul 21, 2018
I don't see why not - there is a single pair of RCA inputs to connect a device, plus a single Bluetooth input.
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- LOUIS T on Mar 5, 2019
- Purchased on Aug 23, 2018
Yes you can as long as the FM tuner has standard outputs like RCA.
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- Chris S on Mar 5, 2019
- Purchased on Jul 27, 2018
You can hook up anything with RCA connections.
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- Kirk K on Mar 5, 2019
- Purchased on Jul 8, 2018
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No, this amplifier Is for powering a set of eired speakers, such as bookshelf or floorstanders. The bluetooth mode it has is only for receiving signal and will not transmit audio to a pair of headphones. Even if you could connect your headphones it would provide you with no benefit as wireless headphones are internally amplified. If you have wireless headphones you should just be able use them directly with your phone or get a cheap usb bluetooth transmitter if you're using a computer.
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- Justin Q on Dec 3, 2018
- Purchased on Apr 22, 2018
Maybe if the bluetooth function worked properly but mine does not. It has latency and keeps dropping out so I don't use that function. Apart from that the amp is brilliant. I love having a line out from the valve preamp and use this with another amp that I built called an Aleph J designed by Nelson Pass.. The sound is amazing.
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- Dan K on Dec 3, 2018
- Purchased on Jul 26, 2018
If you are thinking about bluetooth headphones that will not work as there is no way to pair the headphones to the amplifier. You can use something like the Sennheiser RS 175 RF Wireless Headphone System which uses a transmitter to connect to the headphones and an auxillary cable to connect to the amplifier.
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- Chris S on Dec 4, 2018
- Purchased on Jul 27, 2018
No, I don't believe you can. This amp does not transmit a bluetooth signal. It will just receive a bluetooth signal from your phone (or other source) and then amplify and play that music.
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- Mark A. R on Dec 3, 2018
- Purchased on Jun 24, 2018
The amplifier has no capability to pair with wireless headphones.
One could, I presume, connect the amplifier output to a dedicated wireless headphone transmitter.
One could, I presume, connect the amplifier output to a dedicated wireless headphone transmitter.
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- Paul G on Dec 4, 2018
- Purchased on Aug 13, 2018
No, the output is via wired speakers. There is bluetooth input. No bluetooth output.
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- Kirk K on Dec 5, 2018
- Purchased on Jul 8, 2018
No the amp only works as a Blue tooth receiver. Basically it will only take sources.
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- George F on Dec 3, 2018
- Purchased on Apr 20, 2018
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When not actively playing music, can this 50W tube amp be left on 24/7 or is it best to turn off when not in use to get decent tube life?
Marcos
on Dec 19, 2017
BEST ANSWER: Unfortunately, this amp doesn't turn off itself after some time of not being in use. I'd suggest to turn it off properly if not actively using it in order to increase tubes life.
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- Cesar Adrian Alvarez B on Dec 19, 2017
- Purchased on Apr 27, 2017
BEST ANSWER: Unfortunately, this amp doesn't turn off itself after some time of not being in use. I'd suggest to turn it off properly if not actively using it in order to increase tubes life.
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- Cesar Adrian Alvarez B on Dec 19, 2017
- Purchased on Apr 27, 2017
In one sense tubes are different than transistors. The life of a transistor is shortened by the number of on/off and cold/hot/cold cycles it endures. It is best to leave them on all the time. Tubes are a bit like light bulbs. They have a specific amount of hours that they will burn before failing. So in general, it's good to turn off the amplifier after use.
That said, remember that these tubes are for preamp only. the amplifier still uses a standard transistor output to run your speakers. Thus the "hybrid" title. These tubes are relatively small and put out very little heat so should last several years whether left on or off. The tie breaker here is probably that it will cost a bit for the power to leave them on 24/7/365.
That said, remember that these tubes are for preamp only. the amplifier still uses a standard transistor output to run your speakers. Thus the "hybrid" title. These tubes are relatively small and put out very little heat so should last several years whether left on or off. The tie breaker here is probably that it will cost a bit for the power to leave them on 24/7/365.
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- Bill R on Dec 19, 2017
- Purchased on Jan 26, 2017
Solid state traditionally can be left on for best results but generally tube equipment should be turned off between sessions. Yes it's about tube life but also safety. There is a risk of a tube blowing or other part failing to cause overheating. That won't be good and could be dangerous.
PS. This is a really good mid level amp. And it's got a cool factor with the way the tubes are set up.
PS. This is a really good mid level amp. And it's got a cool factor with the way the tubes are set up.
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- christopher l on Dec 21, 2017
- Purchased on Feb 3, 2017
For me,if i'm going to be playing it throughout the day,I leave it on.If your not going to play it for a day or so,I would shut it off to save the tube life and electricity.I play it every day .So I leave it on all day.Then I shut it off at night.Hope this helps you.
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- Don on Dec 19, 2017
- Purchased on Feb 27, 2017
I've been turning it off when not in active use. On for 5 minutes before I use it, so the tubes can warm up. I *suspect* you'd be okay leaving it on, but I don't.
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- Patrick Z on Dec 19, 2017
- Purchased on May 11, 2017
I would turn it off. Even though it is a hybrid amplifier (tubes and solid state), tubes degrade with use.
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- John W on Dec 19, 2017
- Purchased on Feb 24, 2017
Leaving it on when not in use will reduce the life of the tubes.
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- JIMMY S. on Dec 19, 2017
- Purchased on May 25, 2017
Yes I think it is best to turn off the amp when not use.
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- Carl M on Dec 19, 2017
- Purchased on Apr 27, 2017
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Does it come with a power cable?
New User U
on Aug 8, 2018
BEST ANSWER: Yes, It comes with a power cable. This unit definitely sounds good.
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- John P on Aug 8, 2018
- Purchased on Dec 2, 2017
BEST ANSWER: Yes, It comes with a power cable. This unit definitely sounds good.
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- John P on Aug 8, 2018
- Purchased on Dec 2, 2017
Yes, it comes with a standard IEC detachable power cable.
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- Steve on Aug 8, 2018
- Purchased on Nov 27, 2017
Yes, it does come with a power cable.
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- Derek M on Aug 9, 2018
- Purchased on Nov 30, 2017
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Can it be used as a guitar power amp?
A shopper
on Aug 5, 2019
BEST ANSWER: Guitar amps are designed differently. For one thing they are not high.fidelity. some Amt of distortion is part of their charm. The designers aim for some recognizable idiosyncratic guitar sound. V.s.. The accurate reproduction of the input.. Could you plug a guitar into a hifi amp? I do no see why not although the typical electric guitar pickup signal will be probably a bit too strong for it. Will you love the sound? Probably not.it will be too clean and bring out any noise amd imperfection your guitar has instead of producing that creamy Santana tone you are after.
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- New User U on Aug 5, 2019
- Purchased on Dec 1, 2018
BEST ANSWER: Guitar amps are designed differently. For one thing they are not high.fidelity. some Amt of distortion is part of their charm. The designers aim for some recognizable idiosyncratic guitar sound. V.s.. The accurate reproduction of the input.. Could you plug a guitar into a hifi amp? I do no see why not although the typical electric guitar pickup signal will be probably a bit too strong for it. Will you love the sound? Probably not.it will be too clean and bring out any noise amd imperfection your guitar has instead of producing that creamy Santana tone you are after.
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- New User U on Aug 5, 2019
- Purchased on Dec 1, 2018
I'm pretty sure the answer is no, at least there is no plug in, and it doesn't put out a lot of power. I have it running two small-medium speakers, and the Pre-Out running a distrubution amp throughout my house...and I max the volume on my iPHone and on this amp, and for low volume recordings...I'd like just a little more. I've got a hybrid bass guitar amp and it's got a couple tubes running a solid state amp for the best of both, so I think you're on the right track. Said amp is a GK MB Fusion, but a lot more $ than this little guy. Good luck.
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- New User U on Aug 5, 2019
- Purchased on May 18, 2019
At only 50W, this would not be very powerful, though but might be OK for a guitar (not a bass, etc.). The only input to the amp other than Bluetooth access is 2 RCA jacks, both LINE IN. So you would need a preamp if you wanted to run a guitar through it.
The only real benefit of having this device is that it really looks cool, and anyone who appreciates tubes would love the thing. But don't expect massive power. It's really meant to play Bluetooth stuff (Pandora, iTunes, YouTube, etc., etc.) from your phone. I love the look of it.
The only real benefit of having this device is that it really looks cool, and anyone who appreciates tubes would love the thing. But don't expect massive power. It's really meant to play Bluetooth stuff (Pandora, iTunes, YouTube, etc., etc.) from your phone. I love the look of it.
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- Bob Y on Aug 5, 2019
- Purchased on May 22, 2019
Not recommended. A few main reasons are:
1) This is a stereo amp, and your guitar is mono. You need a special Y adapter plug.
2) The stereo preamp is not compatible with the guitar output.
You can do it with some outboard adapters, but it is more trouble than it is worth. It may work for a low volume practice amp, but in a concert setting you will blow the amp. There are plenty of low cost guitar amps that will work much better than this. Chances are you will blow the amp at some point.
1) This is a stereo amp, and your guitar is mono. You need a special Y adapter plug.
2) The stereo preamp is not compatible with the guitar output.
You can do it with some outboard adapters, but it is more trouble than it is worth. It may work for a low volume practice amp, but in a concert setting you will blow the amp. There are plenty of low cost guitar amps that will work much better than this. Chances are you will blow the amp at some point.
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- Perry G on Aug 5, 2019
- Purchased on Apr 18, 2019
The Monoprice amp is better used for powering stereo equipment. The inputs are mini phono for running a MP3, CD player or fm tuner. The amp does not handle low impedance too well at loud volumes.
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- Zachariah B on Aug 5, 2019
- Purchased on Mar 9, 2019
I'm sure it has plenty of power but lacks the 1/4" jack inputs. It would take a lot of work to set it up for use as an instrument amplifier.
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- New User U on Aug 5, 2019
- Purchased on May 21, 2019
Have not tried and I think the output of guitar will not match
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- stephen c on Aug 8, 2019
- Purchased on Dec 3, 2018
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I own the 25 watt version of this amp. I'm wanting to know if I was to move to the 50 watt version, this one, If I would have a significant increase in ability to drive a pair of def tech 8020t speakers which have built in powered subs. I may be better sticking with the less powerful amp for now, if the difference is not very dramatic. Pre-amp outputs are not really needed for an external sub, given the 8020t's configuration. If It would be for an increase in presence when driving those speakers in the mid to high range, I might upgrade. Any input would help me to make a decision on this purchase. Can anyone advise?
Paul C
on Jan 24, 2017
BEST ANSWER: Looks like you deftechs are looking for quite s bit more power. The 50W upgrade will for sure help. You may want to consider going to the 16154 Headphone Amp as a pre-amp with USB DAC for the warmth and tubie-ness and use my new 1/2 rack 100W x 2 18514 Unity Power amp. If you want to go nuts get two of them and bridge them mono and hit the 8020s with 200W each, Oh-yeah!
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- Dave L Staff on Feb 3, 2017
Everyone should keep in mind what the ohm rating and sensitivity of the speaker they are choosing to use is. I'm running Dynaudio X14's which are rated 8ohm and 85db sensitivity. At that sensitivity, they require a good deal of power to get them moving. The power rating is 53 watts a channel at 4ohms. At ohms it's going to be closer to 30 watts. Somebody here asked what the power output would be at 8ohms but nobody answered. Maybe the staff member can address that.
BEST ANSWER: Looks like you deftechs are looking for quite s bit more power. The 50W upgrade will for sure help. You may want to consider going to the 16154 Headphone Amp as a pre-amp with USB DAC for the warmth and tubie-ness and use my new 1/2 rack 100W x 2 18514 Unity Power amp. If you want to go nuts get two of them and bridge them mono and hit the 8020s with 200W each, Oh-yeah!
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- Dave L Staff on Feb 3, 2017
Everyone should keep in mind what the ohm rating and sensitivity of the speaker they are choosing to use is. I'm running Dynaudio X14's which are rated 8ohm and 85db sensitivity. At that sensitivity, they require a good deal of power to get them moving. The power rating is 53 watts a channel at 4ohms. At ohms it's going to be closer to 30 watts. Somebody here asked what the power output would be at 8ohms but nobody answered. Maybe the staff member can address that.
Paul, I upgraded to the 50w because the 25 wwasn't powerful enough to drive the number of speakers in my house. I play my music very load something, while playing guitar with the record. Using theBlueTooth cuts down on power too. I had to put a power booster for my turntable. I have the volume cranked up all the way and I am not happy with the volume output. Hope that was of some help.
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- Neil d on Feb 3, 2017
- Purchased on Nov 11, 2016
I have owned both amps as well. The 25w provided a full range of bass on my Klipsch Heresy's but was well short of noteworthy. After sending back two of the 25w amps for bad tubes I now drive a pair of 2016 Klipsch Khorns with the 50w as well as a 12" Klipsch sub. There is no comparison in the two - save the 25w for the bookshelf in the office - the 50w is the real deal.
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- Robert P on Feb 7, 2017
- Purchased on Dec 2, 2016
Paul. I held off on the 25w and waited for the 50w for this purpose. I'm driving a pair of B&W bookshelf speakers. The more power the better for overall frequency response and noise. The 50w sounds great and has plenty of power. You never know when you may upgrade speakers. I also swapped out the stock tubes with new JJs which work well. Hope this helps.
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- Tom M on Feb 3, 2017
- Purchased on Nov 9, 2016
I do not have any experience with the 25 watt version. The 50 watt amp is very impressive. I have it driving a pair of Boston Acoustics 6.5 inch monitors with a 15 inch powered sub-woofer. The sound is incredible. I would suspect that more power for the mid and high would be an improvement. Not much more but it is double!!
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- Jim on Feb 3, 2017
- Purchased on Nov 9, 2016
I am running Klipsch RF7 II and originally had the 25 watt amp. It was really just right for the room, but I was moving them to a bigger room and got the 50watt. 3db more can be a pretty loud, but I seems like a bit more power is driving the whole range a lot better on those recordings with a lot of dynamic range.
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- Christopher T on Feb 14, 2017
- Purchased on Nov 28, 2016
It's hard to compare apples to apples with your setup. But I can tell you my 50W Monoprice is hooked up to Polk Audio TS x 110B Bookshelf Speakers and with the volume control at about 50% they are pretty load. I have never played it more than 75%. Hope this helps.
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- Dennis on Feb 3, 2017
- Purchased on Nov 9, 2016
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I have a pair of Pioneer Andrew Jones SP-BS22-LR bookshelf speakers and I'm a bit of a neophyte when it comes to this stuff. Will there be a noticeable difference in performance between this 50w model and the 25w one driving these speakers? Are there any other reason I should get this one over the 25w model?
A shopper
on Mar 23, 2017
BEST ANSWER: All i know is that the Pioneer Andrew Jones SP-B522's are high efficiency speakers and so to my understanding is you don't actually need a high powered amp to drive them. I can't comment in noticeable difference between the two, since i don't own the Andrew Jones nor the 25w Monoprice to make actual comparisons.
I have the 50 watt model hooked up to a pair of Paradigm monitor 3's and although they are a little bit undersized, they really fill up my mid-size bedroom with barely close to 1/4 on the volume control knob setting.
If you are going to be using the amp in a living room or a wider area, then i would definitely suggest to get the 50 watt Monoprice. if a more bigger and robust sound is what you are trying to achieve..
I have the 50 watt model hooked up to a pair of Paradigm monitor 3's and although they are a little bit undersized, they really fill up my mid-size bedroom with barely close to 1/4 on the volume control knob setting.
If you are going to be using the amp in a living room or a wider area, then i would definitely suggest to get the 50 watt Monoprice. if a more bigger and robust sound is what you are trying to achieve..
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- Anthony N on Mar 24, 2017
- Purchased on Jan 27, 2017
BEST ANSWER: All i know is that the Pioneer Andrew Jones SP-B522's are high efficiency speakers and so to my understanding is you don't actually need a high powered amp to drive them. I can't comment in noticeable difference between the two, since i don't own the Andrew Jones nor the 25w Monoprice to make actual comparisons.
I have the 50 watt model hooked up to a pair of Paradigm monitor 3's and although they are a little bit undersized, they really fill up my mid-size bedroom with barely close to 1/4 on the volume control knob setting.
If you are going to be using the amp in a living room or a wider area, then i would definitely suggest to get the 50 watt Monoprice. if a more bigger and robust sound is what you are trying to achieve..
I have the 50 watt model hooked up to a pair of Paradigm monitor 3's and although they are a little bit undersized, they really fill up my mid-size bedroom with barely close to 1/4 on the volume control knob setting.
If you are going to be using the amp in a living room or a wider area, then i would definitely suggest to get the 50 watt Monoprice. if a more bigger and robust sound is what you are trying to achieve..
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- Anthony N on Mar 24, 2017
- Purchased on Jan 27, 2017
Either amp will drive your bookshelf speakers and I'd be surprised if you could tell the difference even in head-to-head comparison when played at reasonable volume, and excessive volume is not the forte of bookshelf speakers. That being said, I would buy the 50-watt amp for the line output. You can power a sub-woofer, and that would definitely improve the overall sound with the B522s. The cost saving is not substantial enough to warrant buying the less expensive unit without line output, in my opinion.
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- Richard M on Mar 24, 2017
- Purchased on Jan 26, 2017
50 watt amp will give you 3db more headroom before clipping. Keeping any solid state amp from clipping is very important as they sound very bad when they clip. Unless your speakers are more than 94db sensitivity I would recommend the 50 watt amplifier.
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- kris b on Mar 23, 2017
- Purchased on Jan 30, 2017
If you do the math the 25w model really only outputs at 9wpc @ a typical 8ohm speaker where the 50w model outputs around 32wpc @ 8ohm. Not many speakers available that have a recommended amp below 10w. Get the 50watt model!!
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- Brian S on Apr 24, 2017
- Purchased on Feb 26, 2017
I have both the 25w and 50w tube amps and there is a significant performance difference between the two. In fact, I purchased the 25w first and was disappointed. I purchased the 50w and the same speakers sounded fantastic (for reference, the speakers were the monoprice retro speaks).
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- Aaron D on Mar 24, 2017
- Purchased on Jan 26, 2017
I would certainly go right for the 50W model. I started with the 25W and Def. Tech. speakers. Under powered. After I upgraded to the 50W. with a pair of Polk Audio RTI 1's, Like night and day! VERY happy with the 50W. Upgraded again to Polk 703's. Incredible sound! Buy the 50W!
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- Kenneth H on Mar 24, 2017
- Purchased on Jan 25, 2017
Really depends on room size. If you are going to be using in nearfield/small room setup, get the 25w version. If you are going to be using in a bigger room get the extra power.
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- Douglas A on Mar 23, 2017
- Purchased on Jan 26, 2017
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Does this have a ground connection?
A shopper
on Jan 7, 2018
BEST ANSWER: No ground connection. I connected my turntable to my old 1969 Kenwood receiver then output low voltage thru the tape recorder out connection to the new tube amp. Then I connected the tube amp high voltage out to my subwoofer amp and satellite speakers. The sound is magnificent. Let me know if you have any further questions. Rich
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- Rich J on Jan 8, 2018
- Purchased on Oct 1, 2017
BEST ANSWER: No ground connection. I connected my turntable to my old 1969 Kenwood receiver then output low voltage thru the tape recorder out connection to the new tube amp. Then I connected the tube amp high voltage out to my subwoofer amp and satellite speakers. The sound is magnificent. Let me know if you have any further questions. Rich
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- Rich J on Jan 8, 2018
- Purchased on Oct 1, 2017
It does as the 125 vac power cord has the ground pin yes. No other ground should be needed. What I did was to "lift
the ground thereby breaking the ground loop which induced the hum.
the ground thereby breaking the ground loop which induced the hum.
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- Randall M on Jan 7, 2018
- Purchased on Oct 27, 2017
No, but this unit is very quiet. No issues with noise from interference.
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- rafael p on Jan 7, 2018
- Purchased on Nov 21, 2017
The power cord is grounded, but there is no separate grounding point.
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- Mark H on Jan 7, 2018
- Purchased on Oct 29, 2017
Grounded threw cord white, black, green ground no separate ground
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- Jeff Northup on Jan 7, 2018
- Purchased on Nov 3, 2017
There is no dedicated ground connector.
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- Rodney K on Jan 8, 2018
- Purchased on Sep 17, 2017
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Can this be run as a 2.1 setup? Passive speakers and powered subwoofer (Klipsch RB-10 and a random sub that I don't have as yet).
Tim F
on Apr 8, 2018
BEST ANSWER: Yes, I have the preouts running a powered Definative sub, works grear
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- John W on Apr 9, 2018
- Purchased on Sep 4, 2017
BEST ANSWER: Yes, I have the preouts running a powered Definative sub, works grear
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- John W on Apr 9, 2018
- Purchased on Sep 4, 2017
This CAN be run as a 2.1 setup. I run regular speaker cable to a set of stand-mounted Polk Audio Lsi7, and run 2 (left, right) RCA cables from the amp to a powered sub. Sounds great. BTW, the Polks are 4 ohm, and the Monoprice pumps them with no problem. Thing’s a little locomotive.....
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- Kenneth T on Apr 8, 2018
- Purchased on Sep 19, 2017
Nope, I don' think so.. It is a 2.0 amplifier and for sub you need a pre-amp to connect this and your sub. The best use for this is combination with 2.0 bookshelf speakers in your study, or bedroom where you want good music or want to listen to your turntable.
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- Ironnerve on Apr 9, 2018
- Purchased on Jul 21, 2017
Yes. I run it exact;y that way. Use the two RCA jacks labelled "Pre Out". My powered sub takes a single 33.5mm stereo plug, so I use standard RCA stereo audio cables out of the amp with the below adapter to plug into my sub. It works great.
Monoprice 6in 3.5mm Stereo Plug to 2 RCA Jack Cable, Black
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- James M on Apr 8, 2018
- Purchased on Aug 28, 2017
Yes, i'm.currentlu running 2 bookshelf speakers (BIC DV62 si) and a powered JBL subwoofer (sub uses preamp out at back of amp) and assembly plays quite loud in medium sized living room
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- Glenn W on Apr 9, 2018
- Purchased on Jul 21, 2017
Yes there is a set of RCA outputs right after pre-amp stage I do believe. But it will only be left or right not centered sub
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- Randall M on Apr 8, 2018
- Purchased on Oct 27, 2017
There is no subwoofer out on this amp
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- David D on Apr 8, 2018
- Purchased on Aug 25, 2017
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Am I able to connect powered bookshelf speakers to this unit or should I look for something else? I have the Edifier r1280db speakers if that makes any difference
A shopper
on Sep 4, 2018
BEST ANSWER: Yes, it has a pre out you can connect to your powered speakers.
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- Robert on Sep 4, 2018
- Purchased on Feb 15, 2018
BEST ANSWER: Yes, it has a pre out you can connect to your powered speakers.
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- Robert on Sep 4, 2018
- Purchased on Feb 15, 2018
Mine is working superbly with vintage Celestion S100 pair. The higher speaker sensitive the better. Friendly advice: meticulously do your home work and replace all the Chinese tubes that is coming with the amp with something better.
It worth every single penny that you spend on, and you will enjoy this toy for years to come.
Thanks,
It worth every single penny that you spend on, and you will enjoy this toy for years to come.
Thanks,
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- GEORGE C on Sep 4, 2018
- Purchased on Nov 24, 2017
Yes, I have tall speakers for a large room connected to them. Plus, if you're not happy you can return it for a refund.
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- Richard C on Sep 4, 2018
- Purchased on Feb 15, 2018
Those are powered speakers so you don't need an external amp. Just plug your source directly into the speakers.
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- Ryan S on Sep 5, 2018
- Purchased on Nov 22, 2017
Not sure about powersd bookshelf speakers but I run Klipsch Forte and am very satisfied.
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- Darrin V on Sep 4, 2018
- Purchased on Nov 26, 2017
Yes, you should be able to connect to Edifier r1280db (using RCA input) fine.
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- Jonathan C on Sep 4, 2018
- Purchased on Nov 24, 2017
Yes it has RCA output and the 50watt powered out
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- Tom W on Sep 7, 2018
- Purchased on Nov 13, 2017
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Outputs?
A shopper
on Dec 13, 2018
BEST ANSWER: 5-way binders for speakers and dual RCA line out. All output are adjustable with the main volume control.
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- Dave L Staff on Dec 14, 2018
BEST ANSWER: 5-way binders for speakers and dual RCA line out. All output are adjustable with the main volume control.
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- Dave L Staff on Dec 14, 2018
This unit has 2 high level outputs for connecting your speakers and 2 low level outputs (RCA connections) which can be connected to a separate amplifier to add extra speakers
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- Thomas B on Dec 14, 2018
- Purchased on Sep 14, 2018
There's a stereo pre-amp output and one set of stereo speaker posts. Mine are a set of Bose 901 Series II. Works fine.
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- Debra S on Dec 14, 2018
- Purchased on Dec 2, 2018
It has one set of outputs which are perfect for driving a sub-woofer.
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- Jasper F on Dec 15, 2018
- Purchased on Nov 28, 2018
Has Speaker Level and Pre-amp (Line) Level Outputs
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- Sean M on Dec 18, 2018
- Purchased on Dec 3, 2018
Left speaker, Right speaker and Subwoofer.
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- Warren D on Dec 15, 2018
- Purchased on Nov 29, 2018
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Can this unit automatically wake on bluetooth input and sleep after the bluetooth signal stops? Or must the power be done separately?
A shopper
on Jun 19, 2019
BEST ANSWER: The unit needs to be manually powered on/off by physically depressing the power button, so will not wake or sleep automatically. Once powered On, the unit will automatically pair Bluetooth to the last paired unit in local vicinity. Part of the appeal of this unit is its simplistic, vintage design, so manual operation of the power switch is required.
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- Peter K on Jun 19, 2019
- Purchased on Oct 22, 2018
BEST ANSWER: The unit needs to be manually powered on/off by physically depressing the power button, so will not wake or sleep automatically. Once powered On, the unit will automatically pair Bluetooth to the last paired unit in local vicinity. Part of the appeal of this unit is its simplistic, vintage design, so manual operation of the power switch is required.
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- Peter K on Jun 19, 2019
- Purchased on Oct 22, 2018
Immediate answer - No. [If your expecting automatic on/off of the unit relative to receiving a Bluetooth signal?] However, I use mine at work on my desk and at times, I have to turn my phone off, but I leave the unit on. No hum or buzz. Then when I return to my phone [bluetooth], it picks back up again. I turn the system off at the end of the day.
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- Bryan C on Jun 22, 2019
- Purchased on Sep 29, 2018
This unit doesn’t have any kind of sleep or standby. It could be a nice feature but the simplicity of it probably insures that there is little to go wrong in the future.
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- Don on Jun 19, 2019
- Purchased on Sep 29, 2017
Unfortunately no. The power must be manually turned on, however if your blue tooth has been previously paired and reciever is set to bluetooth, it will auto connect.
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- Scott M on Jun 19, 2019
- Purchased on Sep 11, 2018
Totally separate... your tubes will stay on
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- Dan on Jun 19, 2019
- Purchased on Oct 3, 2018
You have to manually power it on and off
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- Greg P on Jun 19, 2019
- Purchased on Sep 9, 2018
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My unit has suddenly developed a ground hum thru the speaker outputs.. what can i do to make it go away? Love this unit and this is breaking my heart, help
Linda R
on Jan 6, 2020
BEST ANSWER: I have two units, and both have a minor hum that i only hear (through the speakers) with nothing playing or the volume so low so can barely hear it. In troubleshooting I discovered that when I unplug the coax cable that comes from my DISH satellite box, the hum goes away. Note that I run my TV’s audio into the Monoprice setup in both rooms (both separate rooms, but both having DISH audio connected via the , through the “CD” switch setting). For music, I run through the Bluetooth switch setting.
From further research the DISH satellite probably is NOT properly grounded. I think the hum occurs through both switch settings regardless of the source, but when i unplug the coax cable out of the mix, problem solved. Check grounds, and the ground(s) of the source. This is all outside my wheelhouse, but i’m a good troubleshooter so hopefully this helps you find the issue.
From further research the DISH satellite probably is NOT properly grounded. I think the hum occurs through both switch settings regardless of the source, but when i unplug the coax cable out of the mix, problem solved. Check grounds, and the ground(s) of the source. This is all outside my wheelhouse, but i’m a good troubleshooter so hopefully this helps you find the issue.
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- New User U on Jan 6, 2020
- Purchased on May 18, 2019
BEST ANSWER: I have two units, and both have a minor hum that i only hear (through the speakers) with nothing playing or the volume so low so can barely hear it. In troubleshooting I discovered that when I unplug the coax cable that comes from my DISH satellite box, the hum goes away. Note that I run my TV’s audio into the Monoprice setup in both rooms (both separate rooms, but both having DISH audio connected via the , through the “CD” switch setting). For music, I run through the Bluetooth switch setting.
From further research the DISH satellite probably is NOT properly grounded. I think the hum occurs through both switch settings regardless of the source, but when i unplug the coax cable out of the mix, problem solved. Check grounds, and the ground(s) of the source. This is all outside my wheelhouse, but i’m a good troubleshooter so hopefully this helps you find the issue.
From further research the DISH satellite probably is NOT properly grounded. I think the hum occurs through both switch settings regardless of the source, but when i unplug the coax cable out of the mix, problem solved. Check grounds, and the ground(s) of the source. This is all outside my wheelhouse, but i’m a good troubleshooter so hopefully this helps you find the issue.
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- New User U on Jan 6, 2020
- Purchased on May 18, 2019
The first thing I would do to try to fix the hum would be to replace the tubes, there might be a bad tube , you could also try sliding the tubes in and out of the tube socket a few times to make sure the tubes Are making good contact or it might be something as simple as loose speaker wires, hope this helps , good luck.
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- Dan W on Jan 7, 2020
- Purchased on May 6, 2019
I think this is a great amp as well. Maybe try swapping the tubes. Try connecting it to a different electric outlet. Check for interference between speaker wire and power cords. Suggestions in reverse order.
Good luck.
Good luck.
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- 2x6spds on Jan 6, 2020
- Purchased on Apr 22, 2019
Check your Audio Plug and if the Hum comes when using Bluetooth try turning the output volume down a touch. I actually have mine hooked to a NAD receiver and use this one as a pre amp
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- robert r on Jan 7, 2020
- Purchased on Aug 4, 2019
You may have a grounding issue with your outlet or a faulty speaker wire. Google “ground loop stereo” and that should help you
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- WILLIAM H on Jan 6, 2020
- Purchased on Jun 16, 2019
My unit puts out a slight hum, but I would say it sounds like a typical tube hum. It is not overbearing.....
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- Jake T on Jan 6, 2020
- Purchased on Jul 10, 2019
I’d start with the tubes, they can degrade over time. Good luck!
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- Timothy S on Jan 8, 2020
- Purchased on Apr 14, 2019
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Hi, I was looking for a solution for a small condo living room. I was hoping to combine this AMP with a pair of in-wall speakers. Will the Amber 6.5-inch Carbon Fiber 3-way In-Wall Column Speaker with Ribbon Tweeter Product # 15700 work well, or is the amp not powerful enough? Would you suggest smaller speakers? Would you suggest adding a powered sub-woofer? Or a bigger AMP? How loud is 50wX2?
Thanks!
Thanks!
Steve S
on Dec 14, 2016
Monoprice 50-Watt Stereo Hybrid Tube Amplifier with Bluetooth, Line Output, and Qualcomm aptX Audio
Monoprice Amber In-Wall Speaker 6.5in 3-way Carbon Fiber Column with Ribbon Tweeter (each)
BEST ANSWER: Thanks for your interest in these audio products. Tubes + Ribbons + Magic! I did some of my testing with this exact configuration. It is a fantastic sound. It does get some pretty good volume. It should be plenty of volume for your condo with a small sub, unless you like debating your neighbors about the how sound dissipates through air vs, walls.
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- Dave L Staff on Mar 17, 2017
Monoprice 8in 60-Watt Powered Subwoofer, Black
BEST ANSWER: Thanks for your interest in these audio products. Tubes + Ribbons + Magic! I did some of my testing with this exact configuration. It is a fantastic sound. It does get some pretty good volume. It should be plenty of volume for your condo with a small sub, unless you like debating your neighbors about the how sound dissipates through air vs, walls.
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- Dave L Staff on Mar 17, 2017
Monoprice 8in 60-Watt Powered Subwoofer, Black
50 watts by 2 is not that loud in my opinion. I am using a 150 watt by 2 channel amp for these speakers. If you desire bass with some presence than yes you will desire a subwoofer. I paired mine with an older JBL dual 8" sub being run with an additional 150 watt by 2 amp. Keep in mind that an amplifier is not supposed to be turned up beyond half way. If you do you will loose details in the sound and send distortion and possibly damage the speakers with the under power distortion. My personal opinion of these speakers is that they are very directional. You need to sit inbeteeen the two of them to get a good stereo image. I would prefer a slightly warmer midrange but for the money they are great speakers.
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- Bill A on Mar 17, 2017
I'm using the 50w amp with an older REL sub and Kef LS50's which are pretty inefficient speakers at 85db. That being said I'm only turning the volume up to the 10:00 position (approx 40%) and i get readings of 90-95 decibels in my listening position which is 11 feet from the speakers. It's loud and it sounds fantastic. For fun I hooked up some very efficient older Infinity's rated at 100db. I left the volume at 35% and hit play and Bam! I had to jump up and turn it down fast. It was very loud and since it was after midnight I
didn't want to wake the neighbors.
didn't want to wake the neighbors.
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- New User U on Feb 9, 2019
I can't speak to those speakers, but this amp has ample power and cranks pretty good. I have it in my office on a pair of JBL G200s, and it rattles the entire house without too much effort. If you are planning to use as a main audio system in a living room, I would definitely consider a powered subwoofer as the in-wall speakers won't give you the bottom-end you're probably looking for.
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- Andy E on Mar 18, 2017
- Purchased on Jan 15, 2017
Opinion, I would recomend going with a regular home theater amp for your purpose. this may be under powering your speakers and you would probably like the multiple configure options of a higher end reciever/amplifier. Again, opinion. This type of amp is geared more for the audio hobbyist in a bookshelf configuration. Perhaps pared with a turntable.
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- Garry C on Dec 31, 2016
Hi. I think that you'll enjoy the warm tube sound paired with the ribbon tweeters in the speakers. I would suggest a sub using the preamp output in the rear. I use this 2.1 combo and find it Very satisfying . How loud I can't say. I think it will be plenty loud for you. My system fills a medium sized room with great sound. Go for it!
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- PETER M P on Mar 18, 2017
- Purchased on Jan 5, 2017
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I am thinking of buying this and using it as a front channel amplifier for an AV 7.1 receiver with pre outs. Is this a suitable use for this amplifier?
New User U
on Feb 21, 2017
BEST ANSWER: Thanks for our interest in our tube amp. I would love for you to buy this product however I do not think this application will serve you for the best. The best part of the tube amp is the warm "color" it adds to the sound. Your 7.1 system requires that all channels work seamlessly together to provide as large a sound stage as possible. The coloration for you main L/R channels may distract from your movie going experience. This unit is designed for listening to music. It will serve you best in a den or second family room with a good set of bookshelf speakers and a small powered sub.
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- Dave L Staff on Feb 28, 2017
BEST ANSWER: Thanks for our interest in our tube amp. I would love for you to buy this product however I do not think this application will serve you for the best. The best part of the tube amp is the warm "color" it adds to the sound. Your 7.1 system requires that all channels work seamlessly together to provide as large a sound stage as possible. The coloration for you main L/R channels may distract from your movie going experience. This unit is designed for listening to music. It will serve you best in a den or second family room with a good set of bookshelf speakers and a small powered sub.
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- Dave L Staff on Feb 28, 2017
If you are planning to use this to drive your center channel, then it will work. Keep in mind that you would only use on of the channels which would leave you with only driving 25 watts to your speaker. This amp does not allow you to bridge the 2 channels together. If you are using this for your left and right front speakers, it will work. In a home theater it is better to have your channels match in various ways, such as power, speaker brands, timber, efficiency, etc.. Home theater demands have a greater peak need from a power perspective then listening to music. This amp performs well with Polk Audio bookshelf speakers playing AC DC's "Back In Black" on vinyl. I have not plugged any other speakers such as my tower speakers to see how they sound so I have no experience with a more demanding speaker. Hope this helps.
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- Forrest S on Mar 1, 2017
- Purchased on Nov 25, 2016
I would be using it to drive my front channel. Fronts are Klipsch Forte II, very efficient speakers (99 db at 1 watt at 1 meter). 50 watts is more than enough to drive these speakers.
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- New User U on Mar 1, 2017
Simple answer is No - The Pre-Out on this amp is for a 2.1 Stereo setup Ie two speakers and one powered subwoofer
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- Jim M on Feb 28, 2017
- Purchased on Nov 25, 2016
the application would be to use this amp to drive the front two speakers only. I would not be using the preouts on the tube amp but rather the preouts on the AV receiver to drive front channel only.
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- New User U on Mar 1, 2017
I don't believe so... you maybe better off finding a unit that is a preamp amp only, not a full amplifier
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- Dennis M on Mar 1, 2017
- Purchased on Nov 28, 2016
what would be the point of using only a preamp when the AV receiver is already a preamp? I am looking to soften the sound on front channels for listening to music and not have any loss of sound quality when watching movies.
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- New User U on Mar 1, 2017
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What is the height measurement of the unit? I have to fit it in a shelve and I want to make sure it can fit.
A shopper
on May 8, 2018
BEST ANSWER: The height of the tube amp is about 5" I would not recommend putting in a shelf less than 10" high due to the amount of heat that is generated by the tubes.
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- Dave L Staff on May 14, 2018
BEST ANSWER: The height of the tube amp is about 5" I would not recommend putting in a shelf less than 10" high due to the amount of heat that is generated by the tubes.
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- Dave L Staff on May 14, 2018
I measure 5 7/8" inches. This is from the surface the feet are on to the top of the square black cover behind the tube cages. With a 5 7/8" opening the amp would touch the top. A 6" opening would give you 1/8" gap. But you should also consider cooling air flow as well as bluetooth antenna reception if you're going to bury it in a cabinet. I like mine out in the open because half the reason I got it was for its looks.
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- James M on May 14, 2018
- Purchased on Aug 28, 2017
It's just a little shy of six inches. Do beware that the tubes get extremely hot and will need decent airflow.
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- Brian P on May 14, 2018
- Purchased on Sep 16, 2017
Slightly less than 6 inches tall. 5.875 inches exactly.
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- James B on May 15, 2018
- Purchased on Oct 28, 2017
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Would this amp work with a set of Sansui SP2500x speakers and an Audi Technical ATLP120?
New User U
on Mar 26, 2019
BEST ANSWER: It should work with almost all speakers, but I believe the wattage is measured at 4 ohms so you will get less if your speakers are 8 ohm, If the audio technica you are referring to is a turntable you will need a stepup as this unit does not have a phono in. Regardless, be sure and roll the tubes when you get the unit - big increase in sound quality.
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- William B on Mar 27, 2019
- Purchased on Apr 20, 2018
BEST ANSWER: It should work with almost all speakers, but I believe the wattage is measured at 4 ohms so you will get less if your speakers are 8 ohm, If the audio technica you are referring to is a turntable you will need a stepup as this unit does not have a phono in. Regardless, be sure and roll the tubes when you get the unit - big increase in sound quality.
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- William B on Mar 27, 2019
- Purchased on Apr 20, 2018
I don't see why not. I am using a ATLP120 (I don't use the built in pre amp. I use a Schitt Mani pre amp) with a Ortofan Blue cartridge to drive a pair of Klipsch RF7 III's and SLP sub-woofer. I use the set up for vinyl and streamed audio files from my laptop using blue tooth in my home office.
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- irishjim on Mar 27, 2019
- Purchased on May 30, 2018
Will work very well, sansui sp2500 x are very efficient 97 db/m speakers. Audio Technica LP 120 has line out, make sure to switch to line and you are good to go.
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- Fahim H on Mar 26, 2019
- Purchased on Jun 24, 2018
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Can I connect a turntable without a preamp to the Monoprice 50-Watt Stereo Hybrid Tube Amplifier?
Stephen K
on Jan 16, 2021
BEST ANSWER: No Stephen. This hybrid amp (tube preamp/solid state power amp) does not have a phono stage. Your turntable will need a separate phono preamp. Monoprice does sell a full tube amp (tube preamp and tube power amp) with a phono stage for $300. .
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- John V on Jan 16, 2021
- Purchased on Apr 8, 2020
BEST ANSWER: No Stephen. This hybrid amp (tube preamp/solid state power amp) does not have a phono stage. Your turntable will need a separate phono preamp. Monoprice does sell a full tube amp (tube preamp and tube power amp) with a phono stage for $300. .
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- John V on Jan 16, 2021
- Purchased on Apr 8, 2020
I needed a preamp for mine. There’s plenty that are pretty inexpensive. This amplifier is fantastic though
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- Zach Y on Jan 16, 2021
- Purchased on May 29, 2020
not this one, but there is another model I also bought that has a phono input
sounds great, too
sounds great, too
Monoprice Pure Tube Stereo Amplifier with Bluetooth, Line and Phono Inputs, and Qualcomm aptX Audio
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- Marcus P on Jan 16, 2021
- Purchased on Mar 12, 2020
Yes, you can. The amp functions as an integrated one without a preamp.
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- YOUNG IL C on Jan 16, 2021
- Purchased on Jun 4, 2020
You will need a phono preamp, there is no built in preamp .
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- William on Jan 17, 2021
- Purchased on Jun 1, 2020