When you need to LEVEL audiences, only the Steamroller will do! Not only does the Steamroller have tremendous output, this amp is extremely versatile. Available in 100, 200, or 300 watt configurations, this model is perfect for anything from bass guitars and lap steels to grinding, fuzzy, high gain guitars. The Steamroller 100 accepts any combination of EL34, 6L6, KT66, KT77, and KT88 power tubes. The Steamroller 200 comes equipped with four KT120 tubes and the 300 comes equipped with six KT88s.