Monoprice Unity 100-Watt Bridgeable Power Amp
Product # 18513
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So to use in bridged mono, do I use a Y RCA cable to connect the L and R preamp outputs and use the single end to only the left input of this amp? can someone clarify?
A shopper
on Dec 8, 2017
BEST ANSWER: To get the full program from your stereo line out you will need to Y the left and right together then plug mono into the Left input of the Unity amp in bridge mode.
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- Dave L Staff on Dec 12, 2017
BEST ANSWER: To get the full program from your stereo line out you will need to Y the left and right together then plug mono into the Left input of the Unity amp in bridge mode.
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- Dave L Staff on Dec 12, 2017
No, you still need to feed both L/R with the same signal or as the manual states, feed the L input and use the L loop output with a short cable to feed the R input that way both L/R inputs have the same signal.
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- Alex F on Dec 13, 2017
Hi, I just bought this item and am using in mono bridged mode for center channel. I wondered the same thing. The manual explains to use a single cable to top Left input only. Works great.
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- Maggie W on Dec 13, 2017
- Purchased on Nov 24, 2017
i used speaker cable to the block... negative to left negative and positive to right positive
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- ADAM J C on Dec 12, 2017
- Purchased on Sep 17, 2017
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what are the dimension of the unit ?
A shopper
on Dec 12, 2017
BEST ANSWER: The Full Specs section os the product page indicate the dimensions are:Dimensions 8.5" x 10..5" x 1.8" (216 x 267 x 45 mm)
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- Dave L Staff on Dec 19, 2017
BEST ANSWER: The Full Specs section os the product page indicate the dimensions are:Dimensions 8.5" x 10..5" x 1.8" (216 x 267 x 45 mm)
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- Dave L Staff on Dec 19, 2017
It's about a half-rack wide.
It is designed so that 2 of them can be bolted together and the pair fits in a 1U slot of a 19" Rack.
(It's kinda small)
-KP
It is designed so that 2 of them can be bolted together and the pair fits in a 1U slot of a 19" Rack.
(It's kinda small)
-KP
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- Mr. P on Dec 19, 2017
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With the auto-on feature, how long is the delay from when it detects a signal to fully on?
A shopper
on Mar 10, 2018
Monoprice Unity 100-Watt Bridgeable Power Amp
Monoprice Unity 200-Watt Bridgeable Power Amp
BEST ANSWER: It’s about 3 seconds. But I’ve found that mine (with an amazon dot attached to it) almost never turns off anyway. I plan on replacing it with something else and seeing if I can use this elsewhere.
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- Bruce L on Mar 11, 2018
BEST ANSWER: It’s about 3 seconds. But I’ve found that mine (with an amazon dot attached to it) almost never turns off anyway. I plan on replacing it with something else and seeing if I can use this elsewhere.
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- Bruce L on Mar 11, 2018
Light turns green immediately. Audio begins to pass through in approx. 8 seconds.
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- ERIC S on Mar 10, 2018
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I am looking to use this amp with a Chromecast Audio to power outdoor speakers. The speakers outside are pretty far apart and there are a couple of different listening positions. Is there any way to get a mono signal going to two speakers using this amp? I don't believe that the Chromecast Audio has a setting to output mono. Thanks
Greg D
on Jun 21, 2018
BEST ANSWER: If you want dual mono then just use a 3.5 male stereo (1/8" TRS) to 3.5 female mono (1/8" TS) adaptor plugging directly into the chromecast, then your standard 3.5 male to 2 RCA from the adaptor to the Chromecast Audio. I'm attaching the product that will do it.
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- Mike D on Jun 21, 2018
Monoprice 3.5mm TRS Stereo Plug to 3.5mm TS Mono Jack Adapter, Gold Plated
BEST ANSWER: If you want dual mono then just use a 3.5 male stereo (1/8" TRS) to 3.5 female mono (1/8" TS) adaptor plugging directly into the chromecast, then your standard 3.5 male to 2 RCA from the adaptor to the Chromecast Audio. I'm attaching the product that will do it.
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- Mike D on Jun 21, 2018
Monoprice 3.5mm TRS Stereo Plug to 3.5mm TS Mono Jack Adapter, Gold Plated
The only way I could think of doing that is using a Stereo to Mono RCA adaptor, you'd get a Summed Mono (both left and right signals into the same speakers albiet slightly lower in volume) into the amp.
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- Kareem C on Jun 21, 2018
- Purchased on Dec 7, 2017
The Monoprice apm supports one stero speaker channel; meaning a left and right speaker. So, the product will drver two 8 ohm or 4 ohm speakers.
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- Rick P on Jun 21, 2018
- Purchased on Jan 22, 2018
This amp can be used 8 ohms bridged. So you can run 2 - 16 ohm speakers in parallel or 2 - 4 ohm speakers in series to give you the 8 ohm load.
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- Ron on Jun 21, 2018
- Purchased on Oct 27, 2017
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i plan on using this amp to drive 1 aria in-wall sub. Can i use the subwoofer out on the back of my receiver to connect to the L input channel when bridged?
ed n
on Feb 11, 2018
Monoprice Unity 100-Watt Bridgeable Power Amp
Monoprice Aria In-Wall Speaker, 10in Passive Subwoofer, 200 watts max (single)
BEST ANSWER: Yes, that is exactly how you use this system.
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- Dave L Staff on Feb 20, 2018
BEST ANSWER: Yes, that is exactly how you use this system.
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- Dave L Staff on Feb 20, 2018
Yes, this should work exactly as you described. Not that the Aria In-Wall subs best suited to add a little extra bass to smaller main speakers, but they can't really take the place of a proper boxed sub in a home theater. I would recommend them for multi-room audio setups, or where being in-wall is an absolute must.
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- Adrian K on Feb 20, 2018
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If these specs are correct, I can power four(4) 8 ohm speakers off the two channels on the Unity 200-watt amp (4 ohm load), at 62.5 watts per speaker - which is 12.5 more watts per speaker than getting two(2) Unity 100-watt amps to power the same four speakers (50 watts @ 8 ohm load) while saving space in my rack - with the only draw back being the higher THD and perhaps higher heat from running the amp at 4 ohms? Am I thinking correctly?
New User U
on Mar 6, 2017
Monoprice Unity 100-Watt Bridgeable Power Amp
Monoprice Unity 200-Watt Bridgeable Power Amp
BEST ANSWER: Thanks for your interest in these power amps. You are correct, you will get more power to each speaker using the 200W than 2 x 100W. 2 x100W will run cooler and more efficiently. Depending on your requirements and speakers the difference may be negligible.
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- Dave L Staff on Mar 13, 2017
BEST ANSWER: Thanks for your interest in these power amps. You are correct, you will get more power to each speaker using the 200W than 2 x 100W. 2 x100W will run cooler and more efficiently. Depending on your requirements and speakers the difference may be negligible.
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- Dave L Staff on Mar 13, 2017
If you run an amp at high power, especially if you run it for a long periods, you will certainly damage the amp long term... More power = more heat = more signal degradation / damage. In most instances, you are better off running two amps at a lower power for longer than a single amp at full power. Of course, this totally depends upon the volume that you wish to derive from the setup. If you're only going to operate at 10 percent power, no issues. However, if you're running at 90 - 100 percent, because you want lots of volume, you're probably better off running two amps at 50 percent.
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- Lance B on Mar 14, 2017
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I have 12 pairs of ceiling speakers (8 ohms, 20-100watts per channel), 2 zones also include the Aria in-wall Sub. 4 of the zones could feature 3 or 4 speakers. What is the best way to minimize the number of amps? I will run each zone via Airport Express or Apple TVs.
John L
on Jan 28, 2018
BEST ANSWER: If I was running that many speakers, Id go for an AV receiver or two, depending on your setup. Some even run a second or third zone, so You could have your larger 4 speaker area as the main zone, and then one or two other zones. Most receivers that have networking have airplay built in. Then you can run things from one or two units, instead of trying to juggle 4-6 different apple TVs. Also, look into Yamaha musicast, it might be something that interests you - it's built into their products. I attached 2, but it's likely that there are many that could fit your needs. Also, If you're just planning to play the same music in different rooms, you could connect other speakers to the main zone, and have the receiver do multi-channel stereo- where it sends a stereo signal to each pair of speakers in the main zone. With this, you could even put a volume control in the other rooms. Without knowing more specifics, this is the best advice I can offer. If you really just want to use these amps, you could try splitting the signal. It will mean less power and volume per speaker though, and you run the risk of over-driving this amp. You will need an amp for your in-wall subs though, whichever route you go. I am currently using one of these amps to run 2 of the same subs you have. I run it in bridge mode and then split the output to the two speakers.
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- Rick G on Jan 29, 2018
Monoprice Speaker Volume Controller RMS 100W (Rotary Type) - White
Yamaha RX-V483BL MusicCast 5.1CH Dolby True HD & DTS Master HD 4K Ultra HD pass-thru HDCP 2.2 HDR, Dolby Vision, Hybrid Log-Gamma, BT.2020 Home Theater Receiver - Black
Onkyo TX-NR575 7.2 Channel Network A/V Receiver
BEST ANSWER: If I was running that many speakers, Id go for an AV receiver or two, depending on your setup. Some even run a second or third zone, so You could have your larger 4 speaker area as the main zone, and then one or two other zones. Most receivers that have networking have airplay built in. Then you can run things from one or two units, instead of trying to juggle 4-6 different apple TVs. Also, look into Yamaha musicast, it might be something that interests you - it's built into their products. I attached 2, but it's likely that there are many that could fit your needs. Also, If you're just planning to play the same music in different rooms, you could connect other speakers to the main zone, and have the receiver do multi-channel stereo- where it sends a stereo signal to each pair of speakers in the main zone. With this, you could even put a volume control in the other rooms. Without knowing more specifics, this is the best advice I can offer. If you really just want to use these amps, you could try splitting the signal. It will mean less power and volume per speaker though, and you run the risk of over-driving this amp. You will need an amp for your in-wall subs though, whichever route you go. I am currently using one of these amps to run 2 of the same subs you have. I run it in bridge mode and then split the output to the two speakers.
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- Inaccurate
- Rick G on Jan 29, 2018
Monoprice Speaker Volume Controller RMS 100W (Rotary Type) - White
Yamaha RX-V483BL MusicCast 5.1CH Dolby True HD & DTS Master HD 4K Ultra HD pass-thru HDCP 2.2 HDR, Dolby Vision, Hybrid Log-Gamma, BT.2020 Home Theater Receiver - Black
Onkyo TX-NR575 7.2 Channel Network A/V Receiver
Get a multi-channel amp, that's the best way to minimize amps and keep the system as efficient as possible.
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- Kareem C on Jan 30, 2018
- Purchased on Dec 7, 2017
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Can you use this with 6 ohm speakers?
A shopper
on Apr 26, 2018
BEST ANSWER: yes. I'm using #13706 and they work perfectly.
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- ROBERT T on Apr 26, 2018
- Purchased on Mar 3, 2018
Monoprice Select 5.25-Inch 2-Way Bookshelf Speakers (Pair), Black Finish
BEST ANSWER: yes. I'm using #13706 and they work perfectly.
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- ROBERT T on Apr 26, 2018
- Purchased on Mar 3, 2018
Monoprice Select 5.25-Inch 2-Way Bookshelf Speakers (Pair), Black Finish
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Can you take the cover off and give us pictures of the inside of the amps ?
A shopper
on Mar 10, 2017
BEST ANSWER: Thanks for your interest in this power amp. Monoprice has a 30 day full refund policy and 1 year warranty. If you are not satisfied with the performance of this product you have no risk of losing. The sound is very clean and the power is good.
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- Dave L Staff on Mar 17, 2017
BEST ANSWER: Thanks for your interest in this power amp. Monoprice has a 30 day full refund policy and 1 year warranty. If you are not satisfied with the performance of this product you have no risk of losing. The sound is very clean and the power is good.
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- Dave L Staff on Mar 17, 2017
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I would like to connect an unbalanced MiniDSP 2x4 to the Unity 100W amp. The MiniDSP has a max output voltage of 0.9v. Will this work with the amp?
(I'm told that there should be a rating called 'input sensitivity' to measure this, and that it needs to be at or below 0.9v. I'm also told that input sensitivity can be calculated off of gain and output wattage. Since this amplifier has adjustable gain, what are the minimum and maximum gain settings?)
(I'm told that there should be a rating called 'input sensitivity' to measure this, and that it needs to be at or below 0.9v. I'm also told that input sensitivity can be calculated off of gain and output wattage. Since this amplifier has adjustable gain, what are the minimum and maximum gain settings?)
A shopper
on Apr 3, 2017
BEST ANSWER: Thanks for your interest in this power amp. The Unity series of stereo power amps do not have adjustable input sensitivity. The input will accommodate line input voltage from 400mV (0.4V) to 2V. Rear mounted output volume is adjusted to provide max power before distortion to your speakers. If you have any further questions please contact tech support.
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- Dave L Staff on Apr 13, 2017
BEST ANSWER: Thanks for your interest in this power amp. The Unity series of stereo power amps do not have adjustable input sensitivity. The input will accommodate line input voltage from 400mV (0.4V) to 2V. Rear mounted output volume is adjusted to provide max power before distortion to your speakers. If you have any further questions please contact tech support.
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- Dave L Staff on Apr 13, 2017
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Could I use 2 of these, on mono bridge mode, to biamp a center channel speakers (1 for HF, 2nd for LF) ?. Considering my AVR DENON 4300h has as all AVR preouts, one single center preout, if I split the signal for both amps it will degrade or affect sound performance ?
New User U
on Jan 15, 2019
BEST ANSWER: Do you have an outboard digital crossover to bi-amp the center? Splitting a preamp output into two doesn't accomplish what I think you want to accomplish.
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- Hobie S Staff on Jan 16, 2019
BEST ANSWER: Do you have an outboard digital crossover to bi-amp the center? Splitting a preamp output into two doesn't accomplish what I think you want to accomplish.
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- Hobie S Staff on Jan 16, 2019
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Can the RCA analog out jack feed the low level audio signal out and into an analog input on a TV soundbar?
If so, could the soundbar and the outside speakers be playing at the same time?
My primary use is to feed my outside 2 patio loudspeakers, but wondering if this unit would also function as an audio source by feeding it's signal into my bedroom's soundbar (not purchased yet). Source would be an RPi as a ROON endpoint.
If so, could the soundbar and the outside speakers be playing at the same time?
My primary use is to feed my outside 2 patio loudspeakers, but wondering if this unit would also function as an audio source by feeding it's signal into my bedroom's soundbar (not purchased yet). Source would be an RPi as a ROON endpoint.
Glenn S
on Apr 9, 2019
Monoprice Unity 100-Watt Bridgeable Power Amp
Monoprice Unity 200-Watt Bridgeable Power Amp
BEST ANSWER: Thank you for your question.
These amplifiers can output audio to both the speaker wire and RCA outputs simultaneously.
These amplifiers can output audio to both the speaker wire and RCA outputs simultaneously.
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- Tyler C Staff on Apr 10, 2019
BEST ANSWER: Thank you for your question.
These amplifiers can output audio to both the speaker wire and RCA outputs simultaneously.
These amplifiers can output audio to both the speaker wire and RCA outputs simultaneously.
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- Tyler C Staff on Apr 10, 2019
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If I have 2 pairs of 8ohm speakers that I want to connect to this, will the amp support simply connecting them in parallel and setting the switch to 4ohm?
A shopper
on May 15, 2019
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Setup the Unity 100 to power my ATMOS speakers on my Denon AVR-X4200w, connected using monoprice premium 2 RCA cable, there is a loud buzz even when the AVR is off coming from the speakers, and the output from the right channel is minimal. Checked and confirmed my speaker is fine as I connected back to the AVR direct and did a test tone and output was fine. Even with the volume on the Amp set at minimal the buzz is quite loud and noticeable. Did I get a bad amp? Is there a work around to get the right channel to work and buzz to go away?
Sean S
on Apr 2, 2018
Monoprice Unity 100-Watt Bridgeable Power Amp
Monoprice 3ft Premium 2 RCA Plug/2 RCA Plug M/M 22AWG Cable, Black
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Works great
Works as advertised and I like the auto on feature. I am planning on purchasing an additional unit to power another set of outdoor speakers.
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Great lil Amp
Great for a SONOS connect unit. Plenty of power and auto on works great! Highly recommended.
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Works great
Product works great with my in wall subwoofer
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Multi-room sound from four Unity amps and four Echo Dots
Looking for a great way to get a multi-room audio system without breaking the bank, these amplifiers are the ticket. I setup four of these with four echo dots powering the existing speakers in my house (master bedroom, kitchen, living room and garage). They work perfectly, plenty of power, great sound, low noise and they turn on and off automatically. Totally satisfied!
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good sound but has a screeching sound when powering off
thats the only problem with my unit is that when i hit the power switch to power it off it makes a screeching sound.
the sound quality is good tho with my surround sound reciever pre amp out puts.
fyi i also tried this amp with on its own connected to my desktop computer and i still get that screeching sound every time i turn it off
i gave it 3 stars cause of the powering off screeching sound and cause the units level adjustment has to adjusted from the back with a small screw driver.
the sound quality is good tho with my surround sound reciever pre amp out puts.
fyi i also tried this amp with on its own connected to my desktop computer and i still get that screeching sound every time i turn it off
i gave it 3 stars cause of the powering off screeching sound and cause the units level adjustment has to adjusted from the back with a small screw driver.
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Perfect
Plenty of cool running power. I have 2 of these and 4 of the 200w models to power all the speakers in my house. Coupled with an Apple Express, I can play content without turning on or off the amplifiers, the auto on feature is great. The small form factor was a plus for me also.
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Great Sound
Provide great sound for our audio setup. Got this so that users would not be able to adjust setting easily.
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Works great with my Dayton Audio BST-1
I got a pair of these to run bass transducers in a simrig for translating bumps and road textures from racing simulators. They work perfectly for the job. I left the volume at around 30-40% on the amp and gave me nice feedback.
I did have an issue shortly after a few days. An internal short happened having me to RMA it. So minus a star for that bummer. Sent it back and got the replacement coming. Great Monoprice RMA process.
Thinking of another to try out with movies bolted to my couch. Too great of a price to not.
I did have an issue shortly after a few days. An internal short happened having me to RMA it. So minus a star for that bummer. Sent it back and got the replacement coming. Great Monoprice RMA process.
Thinking of another to try out with movies bolted to my couch. Too great of a price to not.
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Standalone OK. Hums When Connected to Whole House Output
Nice compact units. Purchased two 100W as add-ons to the 6 Zone (12 channel) Multizone Controller/Amplifier System (10761). The Unity Amplifiers were connected to different zone line outputs to expand the number of speakers on one zone. Could not eliminate a low frequency audio hum emitting from the connected speakers. Tried different sources, Tried isolation transformers on both the AC line and the audio connections. Tried numerous audio cables for connections. Tried disconnecting all sources to the Whole House System. Tried alternate cable routing. The hum persisted. The only thing that nearly eliminated the audio hum was to float the third wire ground (I do not recommend this solution). This amplifier worked OK connected to a CD/DVD player but still hummed when connected to the Whole House Unit. I would recommend trying these if connecting to other sources but it did not work for me when connecting to the (10761) Multizone Controller/Amplifier System. I am purchasing another Multizone Controller/Amplifier System for better compatibility. Monoprice supports what they sell and provided RMA(s) for the Unity Amplifier(s) return. I liked the small compact design of the units and the provided hardware to connect two Unity Amplifiers side by side or for rack mounting. Good value and form factor if they will work in your application.
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May 11, 2017
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Does its job well, good for its price
I use this amp in bridged mode with RBHSound E3c center channel speaker. No issues found, the frequency response is reasonably good (I have only tested the acoustic response of amp + speaker).
One drawback I've found is that in "Auto" mode, it takes the amp about 5-10 seconds to ramp up and start playing after sound starts coming in.
Otherwise, I'm pretty happy and I think for this price it's a very good amp.
One drawback I've found is that in "Auto" mode, it takes the amp about 5-10 seconds to ramp up and start playing after sound starts coming in.
Otherwise, I'm pretty happy and I think for this price it's a very good amp.
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