Kustom HV100 tube/hybrid combo amplifier has 2 channels, each with gain and master volume controls. Plenty of information on the internet to do your research. The amp is just too big for me as I just jam with my friends in the basement. I've never had the volume past two. And I am getting too old to carry it up and down the stairs. It is in great condition. Reinforced handle. Just a couple of cosmetic bruises. It also comes with the cover. Based on my research, a new one will cost $499 and a cover will cost $35.