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    Monoprice 5-Watt, 1x8 Guitar Combo Tube Amplifier with Celestion Speaker
    Product # 611705
    $89.99 $99.99 On Sale 10.00% OFF

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    Model 611705
    Driver 8" Celestion Custom
    Rated Power 5 watts
    Frequency Response 80Hz ~ 10kHz
    Total Harmonic Distortion 0.5% (clean mode)
    Hum and Noise -75dB below rated power
    Input Impedance 1 megohm
    Power Consumption 50 watts maximum
    Amplifier Load Range 8 ~ 16 ohms
    Preamplifier Section 1x ECC83/12AX7 preamp tubes
    Power Amplifier Section 1x 6V6GT power tube
    Dimensions 12.0" x 12.2" x 8.3" (305 x 310 x 210 mm)
    Weight 13.2 lbs. (6.0kg)

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    Browse 12 questions Browse 12 questions and 76 answers
    Is the unit available in BLACK?
    John G on Jul 21, 2017
    BEST ANSWER: Thank you for your interest in this guitar tube amp. No, it is not available in black.
    Can you use a 6L6 or EL-34 tube in this amp?
    A shopper on Feb 18, 2017
    BEST ANSWER: No a EL34 or 6L6 are Octal (8 pin ) tubes the El84's in the amp are 9 pin.
    is it multi voltage? Looks like it is from the pic showing the back.
    A shopper on Feb 16, 2017
    BEST ANSWER: Mine lists 2 voltages, ~100VAC~120VAC and ~230VAC~240VAC. There is a black ink mark in the check box, which corresponds to USA voltage. Also, my three conductor cord has a standard USA plug installed. I imagine that for European market (and others that use 240VAC), the mark would be in that check box, and the three conductor cord would have the most appropriate plug for that particular country.
    Can you send the ext. speaker output directly to a mixer or multitrack recorder?
    A shopper on Nov 25, 2017
    BEST ANSWER: No, this speaker level output will damage the front end input of any line level input. You can use our Sound Block DI Box then go XLR into your system.
    Monoprice Sound Block Passive Direct Box with Ground Lift and Attenuator
    Monoprice Sound Block Passive Direct Box with Ground Lift and Attenuator
    What is the bias for this amp? I switched the power tube and want to make sure it is running appropriately?
    A shopper on Sep 11, 2017
    BEST ANSWER: I'm guessing this person is asking how to actually SET the bias on the output tube after swapping it for a different one, and that he or she is OK with changing the existing cathode bias resistor to another value if needed to get more or less idle current through the tube. Prevailing wisdom is that you set the bias to somewhere between 90% and 100% of max allowable dissipation for the output tube in a single-ended amplifier.. Assuming that he or she swapped it for a 6V6GT or equivalent, max dissipation is 15W. Note: My tube is completely blank, with no markings whatsoever. But it LOOKS like a 6V6GT... To find dissipation, measure the idle current through the tube and multiply it by the plate voltage. Example: Plate voltage = 400 V. Current = 25 mA. (400V)(25mA)=10W, which is only 67% of max dissipation. This might be considered to be a bit "cold," so if you adjust the cathode bias resistor to a value that gives a little higher idle current, the tone would probably be more pleasant. Max allowable current would be 15W/400V=37.5mA, although most people would prefer to be a bit more conservative and go less than 100% in order to extend the life of the tube.
    Can you use a Marshall 4x12 MG speaker cab with this amp?
    New User U on Apr 13, 2017
    BEST ANSWER: if the cabinets impedance is 8 ohms or 16 ohms then yes, If not then no. Likely yes.
    What is the speakers impedance?
    New User U on Jul 3, 2018
    BEST ANSWER: 8ohm
    Why can't I use the internal speaker and an extension cabinet at the same time?
    New User U on Jul 2, 2018
    BEST ANSWER: It’s probably a safeguard against dropping the impedance to the amplifier too low.
    There is a amp called Memphis mini Harmonica amp what is the difference and can I change the tubes to match it for Harmonica . Is it hand wired or circuit board ?
    A shopper on Jan 26, 2018
    BEST ANSWER: Forgot to tell you. Out of the box (but breaking in the new speaker at loud volumes for say 10 or 20 hours) the amp sounds very much like the classic 6V6 Harp amps. Change the 6V6 to a 6L6GT for more of a later classic sound. Chnage the 12AX7 to a 12AT7 or even a 12AU7 to get more head room (a clearer sound at a higher volume - headspace/headroom).
    Does this have a tube rectifier?
    A shopper on Jan 10, 2018
    BEST ANSWER: Solid state rectified, tube preamp ( type 12ax7, tube power) nice amp, but not a lot of control as far as gain settings etc. If you have the space, for the price move up to the 15 watt, add an l -pad for output control between amp and speaker for playing in smaller rooms. Also SS rectifier.
    what is the difference between the hi and lo inputs?
    Matthew R on Apr 3, 2017
    BEST ANSWER: the gain is higher on the high input. which means higher volume and more break up (overdrvie sound) when the level is raised up. plugged into the low, the volume is lower and the sound tends to be cleaner as you raise the volume.
    When you plug in a external speaker cab does it shut the built in speaker off?
    A shopper on Feb 18, 2017
    BEST ANSWER: Yes. The built in speaker is not used when an external cabinet is plugged in. I've also noticed that you can't plug into both input channels simultaneously. I tried a/b both inputs but that doesn't work. You can only use one input at a time.
    4.8 / 5.0
    156 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    Greatest cheesy lil amp ever!
    It is difficult to find much fault with this amp.

    Of Course everyone is going to rave about the price and you will keep on seeing the words "for the price"

    Yeah, for the price nothing compares.

    It is a tweed Champ style amp that does the classic Champ tone very well. The tweed Champ is the entry level amp that every novice amp builder puts together as their first project. It is also often the first custom built boutique amp that most Mojo tone chasing aficionado's will obtain for their first high-end Boutique amp.

    This amp obviously isn't built to the high premium standards of a custom boutique amp or many of the DIY built 5e3 builds. But to most average ears ya almost cant tell a difference. Probably the biggest sonic difference is the speaker and MDF cab. Otherwise this is a great sounding Champ.

    Now for the price? There is no way ya can build a complete amp for this price point. The whole reason I bought it for was the fact that I could tinker around and get a single ended output tranny, power tranny, chassis and a cab for a cheap price, not to mention a "Celestion" speaker and Ruby Tubes too? ITS LIKE A WIFE.... YA CANT BEAT IT!

    Only problem is that it is ultra quiet and hum free with great tone, I just can't tear it apart to build something else. Too bad the surface mount components dont lend themselves to modification too easily. So instead I have been doing my best to melt this one down. It takes a hard beating and keeps working well. If you need a quiet blues amp for the recording studio give it a try. To gig with, ya need to mike it but will still have trouble loosing it in the monitors. Instead I just hook it up into a Marshall 1960b 412 cab @ 16ohms (impedence mismatch but sounds better than 8 ohms).

    I also disconnected the NFB circuit to give it some more growl and looser jangle. It does have nice chime without any icepick! I also have a old RCA Blackplate 6L6GT that I replaced the 6v6 and I am abusing it with! I dont know how or why the wimpy looking iron remains so cool to the touch? I even tried a old shugan 6550 too! (actually got a little bit headroom back with that tube after removing the NFB )

    If you like a loose touch sensitive bluesy output tube distortion tweed style tone at bedroom level? Get this amp and remove the NFB and you got boutique sounding champ at ridiculously affordable budget!

    PROS: PRICE! Fact that it is a true single ended class A 6v6 amplifier. Pretty tough to kill too.

    Nice tone and decently voiced!

    Excellent output tube distortion without too much volume!

    Great looking and very tasteful styling.




    CONS: Small Fake Celestion (licensed by) 8" speaker.

    Surface mount components on the printed circuit board for tone stack circuitry.

    Too many people will find out about this little secret !
    December 23, 2015
    Bought on a whim
    This is a great little amp. I purchased it on a time b/c i broke my ht 1 and needed another practice amp.

    I purchased this thinking it was going to be a Champ clone and it does sound very champ like, but after taking it apart-as i am one to do- i quickly realized this is a reboxed laney cub 8. It says it right on the circuit board and the internals match all the laney cub gut shots I have seen.

    But how does it sound? THICK. In all the right ways. With my tele and strat I can get awesome OD tones from noon to 4 o clock on the gain control. They are rich, articulate, and just sound awesome overall. With my p90 LP and tele deluxe the head room plummets but i still get awesome sounding OD with using the HI input.

    The tone control has a very smooth and gradual sweep all the way until just before 10. For that last 1/64th of a turn you get a massive increase in the high end, but it is all VERY usable.

    I used this amp 100% stock for 1 Praise and Worship gig and it did pretty well. I missed the clarity of my HT 40 as the headroom was lacking, but what do you expect? I then decided to swap out the stock tubes for a JJ6v6s and a JJ ecc83MG in the pre amp and I was able to rock my LP with effects with awesome results at the last PW gig (gain at 1, lo input).

    All in all this is an awesome amp. The OD cleans up VERY well with the guitars volume knob and it just sounds awesome on its own. With some new tubes and a 10" speaker you can have a perfectly gig-able amp for almost all genres.

    PROS: sweet tones

    laney cub 8 at almost half off

    CONS: little headroom
    November 16, 2015
    Very easy to convert to a Fender Tweed Champ clone
    I'm just learning to play guitar so I am not qualified to comment on the tone. But I have many decades of tube amp experience.
    This amp uses the same power and output transformers as the
    Laney Cub10, so the power tranny is stout enough to support
    larger filament current. Unfortunately the output transformer
    (New Ventech 6093) is a pushpull output transformer so may not
    be that good in a single-end circuit (without an airgap in the core
    can easily saturate from the 6v6's idle current). I measured the output tranny to have a 3.5kohm impedance when output is connected to 8ohm load, frequeny response is quite flat between 20hz to 20khz at very low power. The tranny actually has a 4ohm but it is not connected.
    If you disconnect the tone control variable resistor by pulling three pins off that 6-wire ribbon cable to the tone and volume,
    you disable the tone control and drastically flatten the frequency response of the amp. Remove the cap connecting to the two pins of the volume control, and use only the low input, and you have yourself
    a Fender 5F1 equivalent amp. If you use the high input, the bypass capacitor gets connected in the cathode and you have a 5E1 equivalance. OK, you'll also need a Jensen/Weber 8" speaker to make it sound like a proper Champ.

    I've only had the amp for a week, but have done two of the above mods plus replaced the output tranny with a real single-ended output tranny.

    Another mod I have in mind is to replace the 6v6 with a 12bh7 dual-triode to properly use the push-pull tranny, but it is more elaborate and I really should be learning to play guitar instead of messing with the amp itself.

    I deducted one star because when I received it, the volume control was at full blast on matter where I set the knob to, it
    prompted me to open up the amp to debug it. It turned out to
    the aforementioned 6-wire ribbon cable was not seated properly. But that debug session made me learn the circuit and it was fun.
    February 16, 2017
    1 year ago
    Sweet deal
    Got this for recording/practicing. I also use a deluxe reverb and vox at4, so I was excited to find a 6V6-based low-watt combo for such a low price. It's pretty quiet, the tone control goes from dark to really bright, and it sounds great at the break up point & beyond - into power tube saturation. The low input is darker sounding as well as attenuated. It's also rather cute, though the celestion badge might have to come off. Thanks monoprice, these little guys will fly off the shelf to satisfied customers.

    PROS: Solid build, 6V6, open back, value

    CONS: None yet
    October 19, 2015
    Not as pictured, but still amazing
    The new "stage right" amp is a little different. The input and controls are on the front instead of the top, instead of a low and high input, there's only one jack with a 5w/1w switch, and the corners are more square. The sound, though, is phenomenal! I would say it can't be beaten for the price, but at twice the price, it's still better than the competition. It takes pedals well, and a harmonica mic is right at home here.
    July 19, 2017
    1 year ago
    Great little amp
    I am comparing this to a 30 watt Peavey Classic, which is isn't. It is a much smaller and lighter amp. I can move it around a lot easier and play it and not fill the entire house with guitar noise. I can throw it in my car and take it to a friends house. Perfect for practicing and jamming. Probably would work well mic'ed or anything else. Sure some reviews say they want more features but that isn't what this amp is. It is a small powerhouse of tone. It sounds good out of the box. I want to try it connected to a cab and see how it does pushing a larger speaker.

    Mine had a dent in the front cloth. It was stretched out too much or something. I set my iron to low and wiggled in over it for a second and it went back to being taught and straight. In case that happens to anyone else.

    PROS: Small
    great at all volumes
    high and low gain give a little diversity

    CONS: not enough of them in stock. Which is a good problem to have.
    March 4, 2016
    Still going strong!
    Bought and reviewed last year and didnt think I would be following up with another review, but after much use and full on everything I can do to void the warranty it has weathered quite well.
    I have misused this amp with the wrong tubes and found that I have likely created some damage to the rectifier circuit . The power supply was forced to power a 6550 for daily use for a month before developing some hum . I replaced with a NOS Sylvania 5881 for another 3 months before restoring the original Chinese 6V6. The amp is still functioning and other than some slight hum it is still quieter than the unmodified Fender Champion 600. I have been running it into a 16 ohm mismatched output of my Marshall 1960b cab loaded with greenbacks. I dont know how the output tranny has not smoked but it is still going strong without any hiccups despite mismatched output and wayyy wrong output tube selection. Other than the slight hum from likely abuse and damage caused by running such an extreme tube swap, this amp sounds as good as ever and the reliability continues to amaze me. I have a friend that purchased two more of these and both of his are silent quiet with same consistent good tone. The stock speaker does require alot of break in and is adequate for most average use, however is to the most discerning ear a tad muddy. A better choice is a more tighter efficient speaker such as the various Alnico choices Perhaps a Weber.
    I run this amp wide open into 412 cab and it is plenty for most decent blues jams. I cant stress enough the simple "modification" of removing the NFB by simply unplugging the jumper off of the circuit board really gives this amp the perfect sparkly growl and breakup that will yield a nice pleasant and resonant controlled feedback when matched with a PAF Les Paul Humbucker. This amp has one of the greatest authentic tweed champ tones except without the hum and noise. Someday I will straighten out my power supply hum. I keep putting it off until I can get around to research a iron swap out with MM on both the power supply and output. (likely cost twice as much and more than the actual amp) just for giggles and grins comparison!
    If you are a tinkerer that is into modifying an amp just to modify it , similarly like the champ 600/epi/blackheart crowd have done,,,, then this isnt going to be the amp for you. First the tone is great just unplug NFB (not really a mod) secondly most of those mod hacks are not going to be savvy enough to source quality tone SMD components let alone the skill to do board level component rework.
    Otherwise it is a simple circuit. However it has been built to modern design parameters with proper board topicality and it is the subtle layout and SMD board design that probably this amp owes to its idle ultra quiet demeanor and tonal consistency. The only defective units encountered were a few early shipping units that would howl and oscillate when turned on......... The defect???? That NFB loop plug was keyed backwards and this is how I came to unplug the NFB loop altogether and make this amp rock! the pins on the board were inserted backwards. I was hopeful to find a big surplus of defective units offered for cheap but that never came to materialize!

    PROS: Totally a sleeper affordable underground sensational blues amp that has a special Mojo regardless of the price, this has that one unique special tweed like tone across the board at any price point. It is very quiet and hum free for any single ended, this one is the one you can place in the studio.
    Very stout and rugged reliability, small lightweight and transportable. This thing can stay in the trunk of the car., bounced around the bed of a truck (dont need to put in the back of truck, because it fits well on the passenger floorboard or back of extended cab) or you can even check it in as carry on luggage. Basically you can take it anywhere and everywhere and not worry about it.... it will always work and if it doesnt you can afford to buy another just in case this one gets ripped off or bashed beyond recognition with no worry of losing that special mojo tone as they all have that same tone stock outta the box.

    CONS: I dunno about cons......
    Maybe that Monoprice is the only single exclusive source and I am unsure of availability? MAYBE the secret will get out on this little gem and everyone will want one and the laws of supply and demand will drive up the price?
    The SMD construction does not lend itself well to the modification hobbyist and tone purist wishing to replace with traditional specialty premium tonal boutique components.( Circuit boards and SMD advanced over PtP for many technical reasons beside financial,,,, get with the times people!)
    VOLUME CONTROL? Why ? It doesnt need a volume control as it is always is best used on full wide open, who needs volume control!
    June 28, 2016
    Really quite good
    Bought this just for bedroom practice. 5 watts is perfect. Loud enough for home use. Very happy with the sound. Volume and Tone allow for versatility. Dimed out, it gets a little muddy, but otherwise it is great.
    The Celestion speaker is better than I expected. Plugged in to my home made 2 x 10 cab the amp really shines! incredible! Even with the volume on 3 it is pretty loud and nice cleans. Takes pedals very well too. Chorus/Delay/Reverb all sound very nice. This is the best low cost all tube amp you can find. For comparison, I own a Fender Mustang I and a VOXAC15, The Mustang is a nice beginner amp, but I would prefer this tube amp over it.

    PROS: TUBES!!! both pre amp and power amp
    Light weight - grab and go anywhere
    Celestion speaker better than expected
    External speaker connection [8-16 ohms]
    Takes pedals well

    CONS: for less than $120, hard to find any cons. you can nit pick and say that the cabinet is not hard wood, or it doesn't have a separate Bass, Mid, treble tone stack, but for this price you will not find that in any amp
    March 18, 2016
    Mighty mini
    Needed a tube amp capable of warm distortion when playing harmonica with a Shure bullet, High impedance mic. Something with a high and low input so that you could switch the 1/4 inch jack from sweet to saucy. This fits the bill. It's light to carry. It breaks up nice and is a real value.

    PROS: Well made and nice to look at.

    CONS: It isn't a $100 champ, but it rocks.
    March 10, 2016
    Great tone at low volumes for those who drive the tubes with OD pedals, etc.
    I did a lot of research to find a tube amp that I could run the tubes fairly hot with a clean tone then push them when my pedals such as a KLON OD. This amp delivers and am presently utilizing the LO watt input. I run in stereo with another brand 15 watt tube amp utilizing it's one watt input. I'm not an armature and I know a little about tone. No need to bore you with all my guitars and pedal board setup. Bottom line: Mine delivers the tone and also allows me to record with microphones in my house without bothering the neighbors..

    PROS: Pros: Delivers tone and versatile given two wattage settings. Takes quality OD pedals, humbuckers, and single coils well. Also, if you like to record with microphones and your only option is a higher watt amp that's too loud., this is an asset. Quality built cabinet. If you have the hands, this puppy translates.

    CONS: Cons: None.
    April 7, 2016