First of all, I want to point out that I own the second version of the Amp in a Can
Solid-state amp hand-assembled in the USA in a 71-cl Heineken can.
This version has been outfitted with stickers.
9 volt battery operation
Bass or guitar input, speaker output
Waterproof speaker ^^
I didn't buy this amp to get a good sound but to have the possibility to play anywhere anytime.
No user's manual (but you won't need one).
It's true that the clean sound is not really clean but I don't need a crystal-clear sound.
The crunch sounds a bit metallic but it's not bad at all.
I've owned it for almost six months. I like its rock n roll style and its very good value for money.
I wouldn't hesitate and buy it again.