Mk3 Driver – Andy Timmons Full Range Overdrive


(2 customer reviews)

Tone Crafted with Andy Timmons

Germanium Diodes for Perfect Compression

Clean Boost to Square Wave Fuzz

Buffered Bypass or True Bypass

Manufactured by RKFX in the USA

Begins shipping 04-15-2024

43 in stock

Mk3 Driver – Andy Timmons Full Range Overdrive

Keeley Electronics Mk3 Driver Andy Timmons Professional Overdrive

The Mk3 Driver – Andy Timmons Full Range Overdrive is an overdrive workstation that allows you to orchestrate everything from a clean boost to a treble supercharger, a chimey tube-amp overdrive to a square-wave, germanium fuzz generator and more. This pedal combines a three-control blues driver circuit with two switches for the voicing Drive and Tone characteristics. Robert and Andy developed these switches to give players a broad range of drive tones.  The Drive toggle engages two germanium diodes for a smoother, slightly compressed drive.  Switch to Andy’s clipping style for a brighter and more articulate attack. Every part of the circuit has been optimized for tone and the demanding needs of a recording and touring artist such as Andy Timmons. Simply adding the Mk3 Driver to your pedalboard will likely make your rig sound better.  This pro sounding overdrive can be switched between true-bypass and buffered bypass at any time.


  • Classic blues driver circuit with decades of Keeley mod experience
  • Germanium based overdrive crafted with Andy Timmons direction
  • AT/RK Tone Switch cuts lows for a clarity or boosts low-end for power
  • AT/RK Drive Switch alternates between asymmetrical silicon to dual germanium diodes
  • Buffered Bypass or True Bypass – Change instantly depending on your rig’s needs
  • JFET Transistors, Germanium Diodes and Op-Amp Gain combine to form harmonically rich overdrive
  • 9 to 18 Volt operation for huge dynamic range and headroom


Keeley Electronics Mk3 Driver Overdrive and Distortion Effect Pedal

Andy Timmons – Tone Switch

The Mk3 Driver gives you two tone control circuits to choose from. When the Tone Switch is up and in the AT Position the tone control features Andy’s preferred voicing of the low-end response of a drive pedal. Each note in a chord is clear and articulate.  If the Tone Switch is down and in the RK Position that features the legendary Phat Boost in the low-end frequency response, perfect for pushing up vintage or single coil pickups.

Keeley Electronics Mk3 Driver Overdrive and Distortion Effect Pedal

Full Range Overdrive – Germanium Toggle Switch

The Mk3 Driver circuit combines JFET saturation, diode clipping, and op-amp clipping in order to create its harmonically rich tone. Drive Switch UP for AT Clipping – this mode features asymmetrical LED diode clipping and is Andy’s Super AT Mod sound.  When the Drive Switch is Down for RK Clipping – the circuit features two germanium diodes for clipping.  This mode can sound a bit like a vintage fuzz pedal with a softer, smoother feel.

Keeley Electronics Mk3 Driver Andy Timmons Professional Overdrive

Mk3 Driver – Both Buffered Bypass & True Bypass

The Mk3 Driver features our precise buffer for noise-free switching. We have developed a buffer which not only makes your rig sound better, it gives you silent switching with no tone loss. Switch between true-bypass and buffered on the fly. Simply press and hold down the foot switch for two seconds and the pedal will switch between true-bypass and buffered bypass!  You can decide what works best in your rig.

Keeley Electronics Mk3 Driver Overdrive and Distortion Effect Pedal

Made In The USA – Mk3 Driver – Andy Timmons Full Range Overdrive

We design, engineer, and manufacture the Keeley Electronics/Andy Timmons Mk3 Driver in Oklahoma City.  Everything about the Mk3 Driver is geared towards the professional musician and their quest for an inspiring tone when performance demands it. From the inside of the pedal and its meticulously built circuit boards to the newly fabricated aluminum enclosure; we make guitar effect pedals like finely crafted musical instruments.

Keeley Electronics Mk3 Driver Andy Timmons Professional Overdrive



A Note From Andy Timmons:

The Mk3 Driver is the ultimate expression of the clean/slightly broken-up tone I’ve been going for over the last several years. Robert Keeley and his incredible team have once again knocked it out of the park!

The AT/AT setting is exactly my Super AT Mod tone: just the right amount of breakup available at your dynamic command. Every note and nuance is clear as a bell. The crazy thing about this mode is that it also sounds great with the gain turned up, providing an incredibly cool Marshall-esque crunch tone.

Having the original RK modded BD-2 circuit is sheer luxury as that’s the circuit that I fell in love with years ago! It still inspires me!

The real hidden gem here is Robert’s new modification that utilizes germanium diodes instead of the original silicon for a new kind of clipping that works insanely well on its own OR as a boost for my lead tone. It has a lovely way of further taming the low-end that I really love.

With the Mk3 Driver and the Halo, I’m in Tone Heaven!

Instructions: Mk3 Driver – Andy Timmons Full Range Overdrive

Keeley Mk3 Driver Andy Timmons Professional Overdrive Instructions

43 in stock

2 reviews for Mk3 Driver - Andy Timmons Full Range Overdrive

  1. fagnoul

    Such a OuuuuffFFfffffy! Hard on my hairdo box . . .
    Pro Sound Unit and such Head Room and Grit on command.
    My new pedal board? Wah – Comp – AT&RK Full Range Overdrive – Flint Reverb-Tremolo.
    No need for more.

    Great works Guys it changed all my amps signing Voice.

    What else to say?

  2. matt

    Heck! Given the name change, thought it best to update this review to reflect that…
    What can I say about the Mk3 Driver? Robert Keeley and Andy Timmons latest collaboration brings some subtle innovations in the evolution of The Keeley Modded Blues Driver.
    The DNA of the amazing Boss Blues Driver is still evident in this stunning pedal which offers four different flavours of drive. – Toggle switches on the drive and tone sections respectively allow you to switch between AT or RK mode and mix and match between the two drives and tone stacks. It goes from subtle amp like glassy cleans, through overdrive and into chewy fuzzy territory with ease.
    If pedalboard real estate is a concern, this could be “The One Drive!” If space is no concern, I’d recommend having two of them! This pedal runs at 9v or if you really want to open up the tonal possibilities, it purrs on 18v. All packaged in Keeley’s sturdy and magnificent new inhouse top loading chassis, with the soft switch that allows you to toggle true or buffered bypass… Brilliant!

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