The Robert Keeley Mk3 Driver-Andy Timmons Full Range Overdrive is a versatile overdrive workstation that enables a range of sounds from a clean boost to a treble supercharger, and from a warm tube-amp overdrive to a square-wave, germanium fuzz generator. The Mk3 Driver combines a three-knob blues driver circuit with dual switches for distinct Drive and Tone voicings.

Robert Keeley and Andy Timmons crafted these switches to offer players a wide spectrum of drive tones. The Drive toggle incorporates two germanium diodes for a smoother, slightly compressed drive, while switching to Andy’s clipping style yields a brighter, more articulate attack. The entire circuit is fine-tuned for the tone and the rigorous demands of a recording and touring artist like Andy Timmons. Adding the Mk3 Driver to your pedalboard enhances your sound. This high-quality overdrive allows seamless switching between true-bypass and buffered bypass modes.

The Mk3 Driver presents two tone control circuits. With the Tone Switch in the AT Position, it delivers Andy’s signature voicing and bass response, ensuring clarity and articulation for each chord note. In the RK Position, the pedal activates the legendary Phat Boost, enriching the low-end frequencies, ideal for augmenting vintage or single-coil pickups.

These pedals boast Keeley's industry-leading buffer for noiseless switching, designed to improve your rig's sound quality and provide silent switching without tone loss. You can toggle between true-bypass and buffered modes instantly; just press and hold the footswitch for two seconds to switch modes, tailoring the pedal's performance to your setup.