Electro-Harmonix Bass Big Muff Pi Distortion Pedal

The Electro-Harmonix Bass Big Muff Pi delivers the legendary Big Muff distortion sound while preserving the deep low-end response that bass players need. Designed specifically for bass guitar, this pedal captures the classic sustain and rich harmonic saturation of the original Big Muff while ensuring your low frequencies remain powerful and clear.

Whether you want gritty overdrive, aggressive distortion, or massive fuzz tones, the Bass Big Muff Pi gives bass players the iconic sound heard on countless recordings across rock, alternative, and metal music.

Classic Big Muff Tone for Bass

The Bass Big Muff Pi features the same unmistakable distortion character that made the original Big Muff famous. Thick sustain, harmonically rich distortion, and powerful tone shaping allow bassists to dial in everything from subtle grit to full-on fuzz.

Unlike many distortion pedals that thin out bass frequencies, the Bass Big Muff Pi is specifically designed to maintain your instrument’s low-end presence so your tone stays full and powerful in a band mix.

Bass Boost and Dry Signal Options

A convenient Bass Boost mini switch enhances low frequencies, ensuring your tone stays massive even when using heavy distortion. The pedal also features dual outputs, allowing you to send both effected and dry signals simultaneously — perfect for recording or complex stage setups.

This flexibility makes the Bass Big Muff Pi a favourite among bass players who want classic fuzz tones while maintaining clarity and definition.

Simple Controls, Powerful Tone

The intuitive control layout makes it easy to shape your tone quickly. The Volume control sets the output level, Tone adjusts the brightness and character of the distortion, and Sustain determines the amount of fuzz and sustain in your signal.

Housed in Electro-Harmonix’s rugged metal chassis, the Bass Big Muff Pi is built to withstand the demands of live performance and touring.

Features

• Legendary Big Muff distortion designed specifically for bass
• No low-end loss when using distortion
• Volume, Tone, and Sustain controls
• Bass Boost mini switch
• Dual outputs for effect and dry signals
• On/Off footswitch
• Durable metal chassis
• Powered by 9V battery or optional AC adapter (sold separately)

Frequently Asked Questions

Is the Bass Big Muff Pi only for bass guitars?
While designed specifically for bass, many guitarists also use it for thick fuzz tones with extended low-end response.

Will distortion remove my bass low end?
No. The Bass Big Muff Pi is designed to preserve low frequencies so your tone remains powerful even with heavy distortion.

What are the dual outputs for?
They allow you to send both the distorted signal and a clean dry signal simultaneously, which is useful for recording or complex stage setups.

How is the pedal powered?
It runs on a 9V battery or an optional AC power adapter (sold separately).