If you need cheap, really, really absolutely cheap micro practice amp, just to have something to plug your guitar in for practicing scales on fretboard, this is the way to go. Yes it sounds terrible and the hum is awful (never used on batteries only with recomended HB power supply) but I´m OK with that and I expected that. Knobs, controls feels cheap and YES it is cheap, thats why I bought it. As I said it works well in terms to hear the notes that you are playing during practicing so definitely worth every penny.