Electro-Harmonix Deluxe Bass Big Muff Pi

A big leap for the Bass Big Muff

The Bass Big Muff Pi from Electro-Harmonix has been loved by players for years, but this latest Deluxe incarnation takes bass distortion to a whole new level.

The sustain and tone controls are retained from the original Big Muff, but here we have a bigger and more complex unit with many enhancements.


The blend control mixes the distorted sound with the dry signal, while the Crossover section has its own dedicated footswitch, and features a low- pass filter added to the dry signal, plus a hi-pass filter positioned in the circuit ahead of the distorted sound.

This is particularly impressive, because it not only smooths the distorted sound, but it adds something like funky parametric tone-shaping, and is worthy of being a pedal in its own right.

The low pass is also great, since it tightens your tone and fattens the selected area of operation. The Gate function is used to eliminate any hum that might be generated by mains, lighting or simply by close proximity to high-gain amps.

With a Pad switch on the input signal for passive and active basses, plus an expanded output section with clean direct out and two effected outputs (balanced DI and standard jack socket), this pedal has got it all.

MusicRadar Rating

4.5 / 5 stars

Sonic versatility. Ability to finely adjust distortion to your own needs.




On many pedals the distorted sound is pretty much universal, but with this Deluxe Muff, everything has been included to allow you to bring your own tonal personality into your distorted sound. A huge leap forward.

Country of Origin



Clean direct out and two effected outputs (balanced DI and standard jack socket); Pad switch; new tone controls

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