All tube, 22 watts, pentode/triode mode, clean and gain channels, reverb, speaker ohm select switch.....At $300+/- (depending on where you buy it) it is a steal. Rivals the best boutique amps including Mesa Boggie. I just bought one brand-spanking new for $345. Absolutely great sound! Did I mention it has an effects loop? You are just not going to find that kind of quality and sound anywhere else at that price.