Peavey Mark III bass amp with dual channels and full equalizer. Amp makes kind of funny sound in the background when playing a note, sounds like tremolo but there is no tremolo on this amp. It's very faint but noticeable. So basically buy the speaker cabinet for $150 and get the amp head for free. The cabinet is worth more than $150 on its own and the app still works good it just needs a tune up or small repair