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    Monoprice 20-Watt, 1x8 Guitar Combo Amplifier
    Product # 611720
    Out of Stock ETA: 10/16/2018


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    Model 611720
    Rated Power 20 watts RMS @ 4-ohm load (Overdrive mode)
    14 watts RMS @ 4-ohm load (Clean mode)
    Frequency Response 70 Hz ~ 10 kHz
    Total Harmonic Distortion 0.5% (Clean mode)
    Hum and Noise -75dB below rated power
    Input Impedance 220 kilohms
    Power Consumption 40 watts maximum
    Maximum Input Level 0.7 Vrms
    Maximum Gain 86dB (Overdrive mode @ 1kHz)
    44dB (Clean mode @ 1kHz)
    Dimensions 13.4" x 15.0" x 6.9" (340 x 380 x 175 mm)
    Weight 15.4 lbs. (7.0kg)

    Start typing your question and we'll check if it was already asked and answered. Learn More
    Browse 2 questions Browse 2 questions and 7 answers
    what size jacks?
    A shopper on Jan 29, 2018
    BEST ANSWER: Input is for standard 1/4" instrument cable. Line-in, line-out, and headphone all use 3.5mm connections.
    will this amp work with a bass too?
    A shopper on Jul 12, 2017
    BEST ANSWER: Thank you for your interest in this amplifier. While not recommended, yes you can use this amp for a bass. Great care needs to be taken so you do not damage the speaker. As a small practice amp for working out bass chops start with volume very low. change setting slowly until you hear too much distortion. If you use with headphones there is no issue. A little distortion on the bass is kinda fun.
    4.0 / 5.0
    7 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    Big little amp
    I was looking for a cheap little ultraportable practice amp. The usual suspects are like the Fender Frontman 10W with a 6” speaker. I figured that if I could get a Monoprice with two channels, 20 watts and an 8” speaker for less money, I should go for it.
    First off, there were no cosmetic flaws. Second, everything works all of the knobs and plugs do what they should.
    The clean channel produces no noise other than the sound of the guitar. You can turn it all the way up and still hear only the guitar. What more can you ask? The gain channel works well also. What does works well mean? It means that my distortion pedal definitely produces more of a tube sound, but the amp does well enough that the pedal stays home. Using gain, the sustain is impressive. I even get a surprising amount of sustain from the clean channel which indicates that some form of uncleanliness is occurring, but I do not hear it.
    Bottom line? Big Bang for the buck!

    PROS: Easy to toss in the car or carry down the street
    Does everything you could reasonable expect for the cash
    My girlfriend says it is "cute."

    CONS: When I plug in my modelling stompbox and set it to emulate a "4 X 12 Marshall stack" it doesn't sound like a "4 X 12 Marshall stack"
    My girlfriend says it is "cute."
    March 22, 2016
    Solid amp for bedroom practice!
    This little amp is solid, has a nice tone both clean and overdrive, perfect for practicing in my apartment anytime without disturbing the neighbors. Tonally the overdrive reminds me a bit of the old Peavey "trans tube" series amps

    PROS: Solid Construction
    Good tone
    July 10, 2016
    Excellent beginner/practice amp.
    Arrived in 5 days and in perfect condition witch was great. This amp is an excellent beginner/practice amp. The clean channel is nice and bright and clear sounding and the gain channel gives you enough growl to satisfy those who want a grunge/metal sound.The input jack is great for playing along with an mp3 player or plugging in your pc and playing along to video lessons and the headphone jack is perfect if you dont want to disturb others. This amp is more than loud enough for a small to medium sized room. I highly recommend to any beginner or those who want a nice affordable practice amp.
    October 5, 2017
    1 year ago
    Huge Bang for the Buck
    This little amp is a total hoot. The clean channel is clean and the gain channel is amazing, you can get really good sustain without having to crank it way up. I have larger amps but wanted something small that I could just toss in the car, this was the only amp in this price range with 20 watts and an 8" speaker, so I went for it. My confidence in Monoprice has once more been rewarded. A flawless(for what it is) product at a bargain price!

    PROS: Great for tossing in the car to play with friends
    Plenty loud unless you intend to gig with it.
    Clear channel works great with my acoustic electric
    Gain channel works well at low volumes

    CONS: When I hook up my amp modeller, it still doesn't sound like a Marshal 4X12 stack.
    March 29, 2016
    Good practice amp
    Overdrive works pretty well. Headphone option works well. Have not plugged in the option to play music on the amp. Good value
    October 24, 2017
    11 months ago
    Not too shabby for a practice amp
    Bought this amp as a second practice amp, since my wife needed an amp for her new bass. The clean channel is really nice, sparkly and rich without mud. The overdrive channel is a bit murky, sounding a bit more like a weak fuzz than a good overdrive. It works alright, but the sound isn't really for me. I prefer to stick to the clean channel when using it, despite the fact that I'm mainly a metal player! I haven't tried it with any pedals, but I may need to snap up a couple distortion and overdrive and see if those can give me the tone I want.
    December 21, 2017
    9 months ago
    Terrible!! Stopped working in 3 min
    This amplifier did not even make it thru one song before it stopped working. No power no red light. No Bueno!! Now I wait probably a week or more for a replacement
    January 21, 2016