This is a crest prolite 2.0 power amp. It has been a workhorse for me for about 2 years. CHANNEL A DOES NOT WORK. That is why I have priced it at 100 bucks. Channel B works great and is more than enough power on its own for just about any cabinet you can throw at it. I am only getting rid of it because I am currently downsizing all of my gear to make room for a baby on the way. Please feel free to ask questions. I do not know why channel A does not work though. Buyer is responsible for shipping.