MXR M78 Custom Badass ’78 Distortion Pedal

90 out of 100. Incorporating 600+ ratings and reviews.


  • Not for modern, tight metal
  • Lacks versatility – has one sound


  • Distortion sound adds harmonics and depth to your guitar tone
  • Pushes even clean amps into tube-like saturation
  • Dynamic re-imagining of a classic 70’s distortion tone with more warmth and mids

MXR took a classic distortion circuit and hot-rodded it for sizzling gain.

The MXR M78 Custom Badass ’78 distortion is a fresh take on a well-loved classic.

It features Output, Tone, and Distortion controls as well as a crunch switch that adds more gain on tap with a slight boost to the brightness.

As the name implies, the MXR M78 oozes attitude and grit. If you need an aggressive-sounding distortion pedal for big rock riffs, you shouldn’t overlook this modern pedal with a classic sound.


  • Controls: Tone, Level, Distortion
  • Analog
  • Buffered Bypass
  • 9-Volt Adapter/Battery (Sold Separately)
  • Special Features: Crunch Switch

Rating Source Highlights

Website Source *Rating Value
Premier Guitar Steve Ouimette 90/100
YouTube Elmo Karjalainen 70/100
*Displayed values are prior to the Gearank Algorithm’s adjustments it makes when evaluating the source.


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