"Updated 4/17/2015:

I read the reviews before buying this and decided to take a chance. Have messed with it for several days now and can report that various issues in most reviews are accurate, but if used with a good source the amp seems to work quite well. Here's some detail:

1) Hum. Yes - if you drive it from a very high impedance source, it has noticeable hum. But even the Fender Mustang 1 V2 has similar comments from some users. I'm guessing this is at least partly due to how exposed the wiring is in whatever guitar/etc you're using. For source impedances below about 1K Ohm, the hum is virtually gone. For example, I used a midrange Electrovoice mic and it works perfectly. Also worked fine with an electric guitar that had normal (unamped) pickups.

2) Smell. Yes - there was a noticeable smell from the glue/etc when I opened it, but it dissipated quite quickly and I don't find it significant now.

3) Good sound overall. YES. Seems to work nicely as a vocal amp, where the tone controls ("equalizer") do what they should. While it is not a replacement for a good receiver with high-cost speakers for making your ipod louder, it seems more than adequate for a vocal amp. Sounded fine with a guitar as well, but a) I am not a guitarist, and b) it doesn't have the "voices" that competing amps do. So its probably going to come down to a tradeoff - do you want a bit more power, or more refined tone/sound options.

4) Volume. Very good. It claims 60 Watts and my initial measurements suggest this is a reasonably accurate number for the _peak_ output (measured about 2.5A peak into the (assumed) 8 Ohm speaker. Soundwise, it is very loud before it clips, so the speaker in the case is decently efficient too. But as other reviewers noted, this is not enough for some (larger) stage environments. It's a 60 (ish) Watt amp. And no - it is not a class D design. It's a normal linear amp.

5) Fidelity. Good. If you set the bass all the way up and the treble and midrange at about 10 to 20% (close to all the way down), the amp itself is reasonably flat from about 100 Hz to over 20 kHz. But it rolls off a lot below that. 20 Hz signals fed to it appeared to be maybe 20 dB down - and it doesn't sound anything like my home receiver and EPI speakers on music recordings with lots of bass. In its defense - it is a guitar amp...

6) Effects. Has a basic reverb with up to a few hundred ms delay. Acts like a simple one-tap echo, which is fine. Both delay and "depth" adjustments work well. For what its worth, the reverb is implemented with a PT2399 integrated circuit which itself has good specs.

7) Imperfections and oddities. Yes, it has some. The hum is definitely there when the cord is not plugged into a guitar or mic. It might have been less had it been built with a three-prong plug and/or had better shielding. But nothing can prevent hum from a poorly shielded source. It may also squeal some, depending on how exposed the cable is. Kind of weird. I can understand the hum, but squeal is unexpected. But both went away when the source was plugged in (except for normal feedback issue when using a mic of course). The 3-band equalizer controls work reasonably well (especially on vocals), but are pretty strange in that the freq response is not flat at mid setting. The main strangeness though is that if you turn down all three controls, the sound stops! So there's some kind of parallel summing of the frequency bands being done I think, rather than the typical series processing found in entertainment amps.

In summary - the unit I got is loud and worked fine. The sound effects are not as refined or adjustable as something like a Fender amp - but you get somewhat higher wattage here and a reverb that is quite simple and effective. I actually wanted a simple amp and reverb, so I'm happy. (A fun thing to do is adjust the delay while the thing is echoing. It changes the clock frequency in the delay IC and this results in neat sounding frequency shifts :-)

Overall, I think this amp is worth the money. But consider the more refined Fender unit if you don't need 60 Watts and plan to play mostly guitar. For vocals, this one might be better. Personal taste to a large extent seems important in deciding either issue..."

"This amp is of good quality for the money. It a bit heavy but then it is built to last with care."

"This amp is a quality item for the dollar range (I paid $49.99). There is some question about sound quality and variation in quality. We purchased two of these, and one arrived with some minor issues, constant humming regardless of volume or EQ settings. Amazon did a wonderfully quick swap and the new one arrived without the problem.

This is not a 6000W stage amp, nor is it so quiet enough to practice without disturbing the neighbors...it has a full punch output at full gain/volume, and can easily light up a back yard.

Specs-
Input: 1/4" Mono (not a tip and ring jack)
Controls: Volume/Gain and selectable Volume 3-EQ range knobs. There are two volume controls, once for each side of the push button selector.
Outputs: 1/4" Mono (for monitor or mixer), 1/4" Dual Mono Headphone jack (tip and ring supplied from the same mono channel).
Power: Lighted front panel rocker switch
The box is very slim and small, about a foot by a foot and 8" deep, the rear is partially open, speaker exposed, and allows for cord storage.

Pros-
-Portability, easy of use and set up.
-Quality finish (leatherette with steel corners) and good construction, 6" heavy duty lead guitar speaker
-Excellent sound and electronics for ANY amp under $100. There are other manufacturers that have small wattage amps and smaller speakers that are $30-$50 more. Go with this one.

Cons-
-Units run hot and cold as to quality, but if it works out of the box, it's good, if not, you'll know it as soon as you power it up. Buy with confidence at Amazon from Amazon and you shouldn't have any worries.

These amps power two Squier(tm) by Fender® electric guitars "