ValveKing offers other high-end features like 3-way variable power switch, so you can tailor your output to your performance situation without compromising tone. With triple 12AX7s, two independent foot-switchable channels each with their own EQ, and the Vari-Class variable Class A/AB simulation control, the next generation ValveKing delivers massive amounts of completely customizable all-tube power. The next generation ValveKing line includes the new extremely portable ValveKing Micro Head, plus the beefed-up ValveKing Head, ValveKing Combo 20, and ValveKing Combo 50, each delivering its own array of pro features and boutique tones.