This is a junk item, but the product itself is great. I was tricked into buying it here, but I can't bring myself to love it, so I'm letting it go. Recommended for those who only play at home. It produces a cool, tube-like sound that's better than the GT-1, MG-300, and POD HD, which are well-regarded for their small amps. I have confirmed power-on, sound output, and checked for defects. Reason for being junk: The parameters move randomly the moment the power is turned on, and that behavior is constantly occurring. However, the sound doesn't seem to change randomly along with it. Since the knob numbers aren't reflected in the parameters, you can only create sounds like you would with an analog multi-effects unit. You can't turn wah and other pedal effects on and off, so if you want to use a pedal, you need to copy from a preset where the pedal is on. You can't edit from the edit button, so you need to enter memory mode and then create and edit sounds. Also, sometimes the knobs don't respond properly, but they respond after moving them once or twice. Overall, it's a unit that "can be used if you can put up with it." There may be overlooked defects, and there's also the possibility of further deterioration over time, so please consider that as well.