Deluxe Bass Big Muff Pi
Deluxe Bass Big Muff Pi
Deluxe Bass Big Muff Pi
Deluxe Bass Big Muff Pi

Deluxe Bass Big Muff Pi

Fuzz / Distortion / Sustainer
Thunderous bass fuzz with crossover control and expanded I/O in the most versitile Bass Big Muff ever!


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Sound Clips
Fat Fuzz with Noise Gate
Increasing Fuzz
Low Pass Filter Control
Hi Pass Filter Control
Deep Driven Bass
Footswitchable Crossover
  • Deluxe Bass Big Muff Pi | Fuzz / Distortion / Sustainer
  • $120.48
  • Find a Dealer

Deluxe Bass Big Muff Pi


The EHX Deluxe Bass Big Muff is the flagship of EHX bass fuzz and delivers enhancements to the classic Bass Big Muff Pi that are specifically tailored to the needs of the modern bass player.

The sturdy foundation of the Deluxe Bass Big Muff is the thunderous tone insprired by the classic Black Russian Big Muff of the ’90s. Added to that is a Blend knob to mix back in your original tone and add definition to your low end. A Gate quiets unwanted hiss for a smooth performance.

The ultimate tone-scultor of the pedal is the Crossover section. Here the Fuzz and Dry signals are seperated and run though a High Pass Filter and Low Pass Filter respectively. This creates a tone with fiery top and and a huge, thumping bottom.

This is the most versitile Bass Big Muff ever!

  • Pad on the input that’s switchable between 0dB and -10dB ensures the pedal is optimized for use with both passive and active pickups
  • Blend allows a player to mix to taste the direct and distorted signals
  • Three outputs: a 1/4″” effect out, 1/4″” direct (buffered dry) out and XLR DI out give complete control of your output signal and sound
  • Foot-switchable crossover section with a variable low pass filter on the dry signal and a variable high pass filter on the distorted signal give bassists the ability to sculpt their sound
  • Crossover circuit, in conjunction with the Blend control, lets you keep the low-end clear and focused and the high-end bright and cutting
  • Built-in noise gate with an adjust threshold eliminates unwanted noise at any level
  • Tough and compact die-cast chassis
  • 9V battery included


Buffered Bypass
Power Supply
9V battery included (optional 9.6VDC-200mA power adapter not included)
Dimensions (in)
5.75 x 4.75 x 2.5
Current Draw
Year Released
Owner's Manual
Works as a master volume for the entire pedal.
This mixes between the dry and distorted signals.
Provides a range of sounds from high treble to deep bass on the distorted effect only.
Adjusts the amount of sustain and distortion.
Controls the input amplitude needed to open the noise gate.
When CROSSOVER is engaged the signal just prior to entering the distortion circuit is sent through a second-order high pass filter.
This toggle switch engages 10dB of attenuation on the input to make the Deluxe Bass Big Muff friendlier to basses with active pickups.
When CROSSOVER is engaged the dry signal is sent through a second-order low pass filter.
Toggles between effect mode and a high quality buffered bypass. When the red status LED is lit, the effect is active.
Turns the crossover circuit on and off. When the green status LED is lit, the crossover circuit is active and the HPF and LPF knobs can be used to produce a multitude of different tones.
Musical instrument input. Plug your instrument into here.
This is a buffered output of the original bass signal. You can connect this jack to an amplifier or different effects chain.
This is the main output of the Deluxe Bass Big Muff Pi. Connect it to the input of your amp or another effects pedal.
Low impedance output so that you can plug directly into a mixing console and recording equipment.

“When you consider its great tone, endless tweakability, and stage-ready connection options, this pedal is the Big Muff many bassists have been waiting for.”

–Premier Guitar

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