MXR M78 Custom Badass '78 Distortion

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.

MusicRadar Rating

4 / 5 stars

Classic hard clipping distortion; two voices; useful EQ.


Battery access.


A solid, versatile distortion pedal.



Country of Origin


Unit Power Source

9V DC Adaptor

Battery/Adaptor Type

9V Battery

Available Controls

Crunch Distortion Output Level Tone

Review Policy
All MusicRadar's reviews are by independent product specialists, who are not aligned to any gear manufacturer or retailer. Our experts also write for renowned magazines such as Guitarist, Total Guitar, Computer Music, Future Music and Rhythm. All are part of Future PLC, the biggest publisher of music making magazines in the world.

Comment on Facebook