MXR M78 Custom Badass '78 Distortion review

  • £109
  • $136.23

A classic circuit gets hot-rodded

Image 1 of 2 MXR M78 Custom Badass 78 Distortion
The M78's Crunch switch effectively provides two voices.
Image 2 of 2 MXR M78 Custom Badass 78 Distortion
The Badass is based on modifications to a classic circuit.

Our Verdict

A solid, versatile distortion pedal.


  • Classic hard clipping distortion; two voices; useful EQ.


  • Battery access.
Buying options

In this first of a new series of pedals, MXR has taken a classic distortion circuit (although it's not saying which!) and modified it to produce a hot-rodded version.


The '78 puts out a recognisable raunchy distortion with a solid mid-range. The tone control adds some sharp top end, while the crunch button gives more of everything, boosting dynamic range and the distortion's harmonic content, effectively giving you two voices - too bad it's not footswitchable.

Responding well to playing dynamics, this is a really good distortion pedal with plenty to offer, particularly if you are a fan of late-'70s rock.

Tech Specs

Country of OriginUSA
Unit Power Source9V DC Adaptor
Battery/Adaptor Type9V Battery
Available ControlsCrunch Distortion Output Level Tone