Tube Drive Twin Triode Dual Overdrive

The Keeley Tube Drive Twin Triode Dual Overdrive combines a genuine high-voltage tube overdrive with Keeley’s Super Phat Mod circuit. The tube section runs a 12AX7 at 168V, using both triodes in series in Class A followed by a tweed-style tone stack, providing touch-sensitive breakup and warm tube saturation. The Phat Mod side adds punch, sustain and thicker amp-like overdrive. Both effects can operate independently or be stacked, with switchable Tube/Drive order via a foot gesture. True bypass and Keeley silent buffered switching are selectable. A Remote TRS jack provides external control, with Tip assigned to Drive and Ring to Tube. The pedal requires 9V DC center-negative power at 500 mA minimum. Each 12AX7 is burned-in and tested and can be replaced using the supplied extraction pin and Allen key.