This is a pedal-type head amp & power amp. It also has a send/return, making it convenient to use. When turning the SAGGING knob from minimum to maximum, it becomes slightly flabby, but my other Stompman also does the same, so I think it's a specification. There are no other problems. Included accessories are the main unit, AC adapter, instruction manual, and box. As a bonus, I'll include a speaker cable.