Keeley Super Phat Mod Full Range OD Overdrive Pedal

94 out of 100. Incorporating 175+ ratings and reviews.
Keeley Electronics

Gearank Recommendation

The Keeley Super Phat Mod appeared on our recommended list for Overdrive Pedals in 2 consecutive editions from February 2020 until October 2022 when it was removed due to the price limit for the list being reduced to $100.

Rating Source Highlight

Website Source *Rating Value Richard Purvis 90/100
*Displayed values are prior to the Gearank Algorithm’s adjustments it makes when evaluating the source.


After gaining popularity for modding existing guitar pedals for various players, Keeley Electronics have become a guitar pedal manufacturer themselves. The Super Phat Mod in particular stemmed from them modding the Boss BD-2 by adding a Phat switch to improve its low end response.

This version now comes with Keeley’s own designed JFET gain circuit which enhances harmonic saturation and tube-like response. As the name implies, it also comes with the Super Phat switch that lets you go from Flat (flat response) to Phat (subtle bass boost).


  • Controls: Level, Tone, Drive
  • Analog
  • True Bypass
  • 9-Volt Adapter/Battery
  • Used by: Simon McBride, Jesse Johnson