This amplifier is absolutely incredible. It features over 50 of your favorite Boss effects already built in! It has a built in attenuator, you can cut ALL the headroom and bring it down to half of a watt. It has five built in amp models(my favorite is the Waza setting.); it's ready to rock when you are. Pair this amp with the matching Katana cab and it's ready to rock whenever you are! DO. NOT. SLEEP. ON. THIS. AMP.