Electro Harmonix Deluxe Bass Big Muff PI 2 Fuzz Pedal

The Electro-Harmonix Deluxe Bass Big Muff Pi 2 takes the unmistakable power and sustain of the Big Muff and expands it into an exceptionally versatile bass fuzz workstation. Based around a distinctive dual op-amp gain circuit, it delivers aggressive midrange grind, huge sustain and thick harmonic texture while providing the tools bassists need to retain definition and fundamental low-end.

A dedicated Blend control mixes the fuzz with the original dry signal, while the footswitchable Crossover section divides the frequency spectrum between clean lows and distorted highs. This makes it possible to create everything from full-range wall-of-sound fuzz to tightly controlled tones with deep, clean bass underneath a cutting layer of distortion.

The Deluxe Bass Big Muff Pi 2 also includes an adjustable noise gate, an input pad for active basses, a buffered Direct Out and a low-impedance XLR DI output. Latching and momentary operation is available from both footswitches, making the pedal equally capable in studio sessions, conventional pedalboards and experimental live rigs.

Quick Product Summary

The Electro-Harmonix Deluxe Bass Big Muff Pi 2 is an analogue bass fuzz, distortion and sustainer pedal built around a dual op-amp Big Muff circuit.

Its Volume, Tone and Sustain controls provide the essential Big Muff sound, while Blend, Gate and footswitchable high-pass and low-pass crossover filters offer far greater control over low-end clarity and distorted texture.

Professional connectivity includes a standard effect output, buffered clean Direct Out and XLR DI output, allowing the pedal to feed an amplifier, mixing desk, recording interface or parallel signal chain.

At A Glance

Feature	Details
Brand	Electro-Harmonix
Model	Deluxe Bass Big Muff Pi 2
Product Type	Bass fuzz, distortion and sustainer pedal
Circuit	Analogue dual op-amp
Audio Format	Mono
Main Controls	Volume, Blend, Tone, Sustain and Gate
Crossover Controls	High-pass filter and low-pass filter
Crossover Operation	Independently footswitchable
Input Pad	Switchable 0 dB or -10 dB
Main Output	¼-inch jack
Direct Output	Buffered clean ¼-inch jack
DI Output	Low-impedance XLR
Bypass Type	Buffered bypass
Footswitch Operation	Latching or momentary
Power	9V DC, centre-negative
Current Draw	45 mA
Power Supply	Electro-Harmonix 9.6V DC adapter included
Main Appeal	Powerful dual op-amp bass fuzz with advanced low-frequency control
Best For	Rock, doom, stoner, alternative, industrial, experimental and modern bass production
Skill Level	Intermediate, advanced and professional players
Condition	Brand New

Why Choose the Electro-Harmonix Deluxe Bass Big Muff Pi 2?

Distinctive Dual Op-Amp Big Muff Circuit

The Deluxe Bass Big Muff Pi 2 uses a unique circuit employing two dual operational amplifiers. This gives the pedal a particularly forceful midrange character alongside the thick sustain and flexible tone shaping associated with the Big Muff family.

Its sound can move from broad, saturated fuzz to grinding, aggressive distortion with a defined attack. This character works particularly well when a bass needs to remain prominent within dense guitars, heavy drums or layered electronic arrangements.

Preserve Your Low End with the Blend Control

Heavy fuzz can sometimes weaken the fundamental bass note or make the sound less defined. The Blend control addresses this by mixing the dry bass signal with the distorted effect.

Turning the control towards dry retains more of the instrument’s original attack and low-frequency weight. Turning it towards the fuzz circuit produces a more fully saturated Big Muff sound.

A balanced setting can provide the best of both signals:

• Clean low-frequency foundation
• Clear note attack
• Thick harmonic fuzz
• Improved definition within a band mix
• Greater control over the overall intensity

The Blend control works in conjunction with the crossover filters to provide much deeper tone-shaping possibilities than a conventional bass fuzz pedal.

Footswitchable Crossover Section

The Crossover circuit splits the signal into separate filtered paths.

A high-pass filter is applied before the signal enters the fuzz circuit, while a low-pass filter is applied to the clean signal. This allows the pedal to combine clear, powerful dry bass frequencies with distorted upper frequencies.

The Crossover section can be activated from its own footswitch, allowing players to move between a conventional blended fuzz sound and a carefully divided clean-and-distorted tone during a performance.

This can be used to create:

• Clean sub-bass beneath bright fuzz
• Tightly controlled distorted mids
• Clear pick attack with a large low-frequency foundation
• Focused synth-like bass textures
• Dramatic changes between song sections
• Parallel-style tones from a single pedal

Adjustable High-Pass Filter

The HPF control adjusts the cutoff frequency applied to the signal entering the distortion circuit.

Its range extends from 115 Hz to 1 kHz. Lower settings allow more bass frequencies into the fuzz, creating a broader and heavier distorted sound. Higher settings restrict the fuzz to the upper frequencies, leaving more space for a clean and controlled low end.

This makes the pedal adaptable to different tunings, playing styles and musical arrangements.

Adjustable Low-Pass Filter

The LPF control adjusts the cutoff frequency applied to the clean signal within the Crossover section.

Its wide 60 Hz to 10 kHz range determines how much of the dry signal is retained. Lower settings isolate the deepest bass frequencies, while higher settings allow more of the original instrument tone and attack to pass through.

By combining the HPF and LPF settings, players can create anything from subtle frequency separation to dramatic clean-bass and distorted-treble layering.

Built-In Adjustable Noise Gate

High-gain fuzz can amplify pickup noise, pedalboard interference and unwanted sound between notes. The Gate control sets the input level required for the effect signal to pass.

Lower settings preserve natural sustain and dynamics. Higher settings provide tighter starts and stops, making the pedal particularly useful for:

• Staccato riffs
• Modern progressive playing
• Industrial bass textures
• Muted rhythmic parts
• Controlled studio recording
• High-output instruments

Turning the Gate fully anticlockwise disables the noise gate.

Classic Big Muff Controls

The Volume, Tone and Sustain controls provide a familiar foundation for shaping the effect.

Volume

Sets the output level from the main effect output and the XLR DI output. It can be used to balance the pedal with the bypassed signal or to create a level boost when the effect is activated.

Tone

Controls the tonal balance of the distorted signal. Anticlockwise settings produce a deeper and darker fuzz, while clockwise settings reduce bass and increase treble for a sharper, more cutting sound.

Sustain

Adjusts the amount of fuzz, distortion and sustain. Lower settings provide a more controlled and responsive drive, while higher settings create dense saturation and long-lasting notes.

Input Pad for Active Basses

A switchable input pad makes the pedal easier to match with instruments producing different output levels.

The 0 dB setting allows the full input signal to reach the effect and is suitable for most passive instruments. The -10 dB position attenuates the incoming signal and can help prevent high-output or active basses from overloading the circuit.

This also gives players another way to alter how strongly the bass drives the fuzz.

XLR DI Output

The low-impedance XLR DI output carries the processed effect signal and can connect directly to suitable recording equipment or a mixing console.

This gives performing bassists and recording musicians the option to send the pedal’s sound directly to front of house or a recording system without relying entirely on a microphone placed in front of an amplifier.

The Volume control affects both the standard effect output and the DI output.

Buffered Clean Direct Out

The separate Direct Out provides a buffered copy of the original unaffected bass signal.

It can be used to feed:

• A second amplifier
• A separate clean effects chain
• A recording interface
• A re-amping system
• A dedicated clean bass channel
• A parallel live rig

The combination of effect, direct and XLR outputs makes the Deluxe Bass Big Muff Pi 2 particularly useful for complex stage and studio routing.

Latching and Momentary Footswitch Operation

Both the Effect and Crossover footswitches support standard latching operation and momentary changes.

A normal press activates or deactivates the selected function. Holding a footswitch for more than half a second temporarily changes its state, returning to the previous setting when released.

This makes it possible to introduce brief bursts of fuzz, momentary crossover filtering or quick transitions without permanently changing the pedal’s current mode.

Momentary operation can also be disabled independently for either footswitch.

Buffered Bypass

The Deluxe Bass Big Muff Pi 2 uses buffered bypass switching. The buffer helps maintain signal integrity when using longer cables or larger pedalboards containing multiple effects.

This can be particularly useful for stage setups where the signal must travel through several pedals before reaching an amplifier or recording system.

Why Choose a Deluxe Bass Fuzz Pedal?

A conventional fuzz pedal can produce huge levels of saturation, but guitar-focused circuits do not always preserve the frequencies needed to give a bass its depth and authority.

A dedicated bass fuzz pedal is designed to manage these lower frequencies more effectively. The Deluxe Bass Big Muff Pi 2 goes further by allowing the clean and distorted signals to be blended and filtered separately.

This additional control helps bassists maintain:

• Low-frequency impact
• Clear rhythmic definition
• Audible note attack
• Consistency across different registers
• Greater separation from distorted guitars
• A stronger fundamental note

The result is a fuzz sound that can be dramatic and heavily saturated without completely sacrificing the role of the bass within the arrangement.

Who Is the Electro-Harmonix Deluxe Bass Big Muff Pi 2 For?

Rock and Alternative Bassists

The strong midrange grind and extensive sustain help the bass remain present alongside distorted electric guitars and powerful drums.

Doom and Stoner Players

High Sustain settings create broad, heavy fuzz textures, while the Blend and Crossover controls retain the low-frequency weight required for slow riffs and down-tuned instruments.

Progressive and Technical Musicians

The adjustable gate, input pad and frequency filters allow the effect to be shaped for precise riffs, unusual tunings and tightly controlled rhythmic passages.

Studio Bassists

The XLR DI, standard effect output and buffered Direct Out provide several options for recording processed and clean signals.

A clean signal can be captured for later processing while the effected sound is monitored or recorded at the same time.

Experimental Musicians

The wide filter ranges and momentary footswitch functions make the pedal suitable for dramatic frequency effects, synth-like textures and unconventional parallel signal paths.

Active Bass Users

The -10 dB input pad allows high-output instruments to be matched more effectively with the fuzz circuit.

Players Building Dual-Amp Rigs

The clean Direct Out and processed output can feed separate amplifiers or effects chains, allowing one signal path to retain clarity while the other carries the full fuzz sound.

What’s Included?

• Electro-Harmonix Deluxe Bass Big Muff Pi 2 pedal
• Electro-Harmonix 9.6V DC 200 mA power adapter

Fair Deal Quality Control Assessment

Every effects pedal supplied by Fair Deal Music is checked by our experienced team before dispatch.

Our assessment includes:

• Enclosure and control inspection
• Input and main output test
• Buffered Direct Out test
• XLR DI output test
• Volume, Tone and Sustain control check
• Blend control operation
• Noise gate response test
• High-pass and low-pass filter check
• Crossover footswitch test
• Effect footswitch test
• Input pad operation
• Latching and momentary switching assessment
• Power supply and power input check
• Final presentation and packing inspection

Technical Specifications

General

Specification	Details
Effect Type	Bass fuzz, distortion and sustainer
Circuit	Analogue
Circuit Design	Two dual operational amplifiers
Audio Format	Mono
Release Year	2026
Bypass	Buffered bypass
Footswitch Type	Soft-touch latching and momentary
Dimensions	5.75 × 4.75 × 2.5 inches
UPC	683274012759

Main Controls

Control	Function
Volume	Adjusts the effect and DI output level
Blend	Mixes the dry and distorted signals
Tone	Adjusts the tonal balance of the distorted signal
Sustain	Controls fuzz intensity, distortion and sustain
Gate	Sets the threshold of the built-in noise gate
HPF	Sets the high-pass cutoff applied before the fuzz circuit
LPF	Sets the low-pass cutoff applied to the clean signal

Crossover Section

Specification	Details
Crossover Type	Footswitchable clean and distorted frequency separation
High-Pass Filter	Second-order
HPF Frequency Range	115 Hz–1 kHz
High-Pass Application	Signal feeding the fuzz circuit
Low-Pass Filter	Second-order
LPF Frequency Range	60 Hz–10 kHz
Low-Pass Application	Dry signal
Internal Level Adjustment	Crossover Volume trim control

Switching

Specification	Details
Effect Footswitch	Activates or bypasses the fuzz effect
Crossover Footswitch	Activates or bypasses the Crossover section
Effect Status LED	Red
Crossover Status LED	Green
Latching Operation	Yes
Momentary Operation	Yes
Momentary Mode Disable	Independently configurable for each footswitch
Input Pad	0 dB or -10 dB

Connections

Connection	Details
Input	¼-inch mono jack
Input Impedance	2.2 MΩ
Main Output	¼-inch mono jack
Main Output Impedance	550 Ω
Direct Out	Buffered unaffected ¼-inch output
Direct Out Impedance	550 Ω
DI Output	Low-impedance XLR effect output
DI Output Impedance	100 Ω
Recommended DI Load	Capable of driving a 600 Ω input

Power Requirements

The Electro-Harmonix Deluxe Bass Big Muff Pi 2 requires a regulated 9V DC power supply with centre-negative polarity.

Specification	Details
Operating Voltage	9V DC
Current Draw	45 mA
Polarity	Centre-negative
Supplied Adapter	Electro-Harmonix 9.6V DC 200 mA
Maximum Permitted Voltage	12V DC

Use the supplied Electro-Harmonix adapter or a compatible regulated pedal power supply capable of providing sufficient current. Using an incorrect voltage or polarity could damage the pedal.

Deluxe Bass Big Muff Pi 2 Compared with Other Bass Fuzz Pedals

Compared with the Bass Big Muff Pi 2

The Bass Big Muff Pi 2 provides the core dual op-amp fuzz sound in a smaller and more straightforward format. It includes Volume, Tone, Sustain and Blend controls alongside a Bass Boost switch.

The Deluxe Bass Big Muff Pi 2 adds:

• Adjustable noise gate
• Footswitchable Crossover section
• High-pass filter
• Low-pass filter
• Active-bass input pad
• XLR DI output
• Buffered clean Direct Out
• Separate Crossover footswitch
• Expanded stage and studio routing

The standard model is ideal for players wanting a more compact route to the dual op-amp sound. The Deluxe version is better suited to musicians who need detailed frequency control and professional connectivity.

Compared with a Conventional Guitar Fuzz

A standard guitar fuzz may produce an exciting sound on bass, but it can reduce low-frequency weight or make the fundamental note difficult to hear.

The Deluxe Bass Big Muff Pi 2 allows the clean bass signal to be blended with the fuzz and divided through the Crossover section, giving the player substantially more control over low-end preservation.

Compared with Using Separate Fuzz, DI and Splitter Pedals

The Deluxe Bass Big Muff Pi 2 combines fuzz, clean blending, frequency splitting, noise gating, signal buffering and DI connectivity within one enclosure.

This can simplify a pedalboard and reduce the amount of external routing equipment required for sophisticated live and recording setups.

Frequently Asked Questions

Can the Deluxe Bass Big Muff Pi 2 create subtle distortion?

Yes. Lower Sustain settings and a dry-leaning Blend setting can produce more restrained drive sounds while retaining the natural attack of the bass.

Can it produce extremely heavy fuzz?

Yes. Increasing Sustain and moving Blend towards the distorted signal creates dense, compressed fuzz with long sustain. The Tone and Crossover controls can then be used to determine how dark, bright or focused that fuzz becomes.

How does the Crossover help in a band mix?

The Crossover can keep deep bass frequencies clean while applying fuzz to the upper range. This preserves the low-frequency foundation while helping the distorted portion remain audible around guitars and drums.

Can the clean and effected signals be recorded separately?

Yes. The buffered Direct Out supplies the original unaffected signal, while the main output and XLR DI provide the effected signal.

The available inputs on the recording equipment will determine how many signals can be captured simultaneously.

Can the pedal connect directly to a mixing desk?

Yes. The low-impedance XLR DI output is designed to connect the processed signal to suitable mixing and recording equipment.

Does the input pad only work with active basses?

No. It can be used whenever the incoming signal is particularly strong, but its primary purpose is to help accommodate active or high-output instruments.

Can momentary switching be disabled?

Yes. Momentary operation can be disabled independently for the Effect and Crossover footswitches, and the pedal remembers the selected setting after being powered down.

Can the pedal be used with a five-string bass?

Yes. The Blend and Crossover controls are particularly useful for retaining the fundamental low frequencies of extended-range instruments.

Can it be used with guitar or synthesisers?

The pedal can process other compatible instrument-level signals, although its frequency response and control layout have been designed primarily for electric bass.

Care should be taken when connecting equipment with high line-level outputs. The -10 dB input setting can help manage stronger signals, but the output level of the connected device should still be set appropriately.

Is it suitable for a large pedalboard?

Yes. The buffered bypass can help maintain signal strength through longer cable runs and multiple effects. Its Direct Out and DI connections also provide useful routing options for more advanced pedalboards.

Fair Deal Music Verdict

★★★★★ 5/5

The Electro-Harmonix Deluxe Bass Big Muff Pi 2 is far more than a standard fuzz pedal. It combines the muscular midrange grind and massive sustain of a dual op-amp Big Muff with the controls bassists need to keep their sound powerful, clear and usable.

The Blend and Crossover sections are the standout features, allowing clean low frequencies and distorted upper frequencies to be shaped independently. Add the adjustable gate, active-bass input pad, clean Direct Out, XLR DI and momentary switching, and this becomes an exceptionally capable tool for both live and studio work.

For bassists who want enormous fuzz tones without surrendering control of their fundamental low end, the Deluxe Bass Big Muff Pi 2 is an outstanding choice.

Why Buy From Fair Deal Music?

Choosing Fair Deal Music means buying from a passionate team of musicians who genuinely understand the products we sell. Whether you're purchasing your first instrument, upgrading your current setup or searching for something special, we're here to help you make the right choice with friendly advice and expert support.

When you shop with Fair Deal Music, you can buy with confidence thanks to:

• Expert advice from knowledgeable musicians
• Carefully checked new, used, pre-owned and ex-display equipment
• Competitive prices on leading music brands
• Secure UK-wide delivery
• Flexible finance options available, subject to status
• Friendly support before and after your purchase
• A trusted independent UK music retailer with decades of experience

Trade In. Trade Up. Save More.

Thinking about upgrading? Your next piece of gear could cost less than you think.

We're always happy to consider part exchanges and trade-ins on a wide range of musical instruments and equipment. Whether you're looking to move on a guitar, amplifier, keyboard, drum kit, studio equipment or another piece of gear, our team can provide a straightforward, no-obligation valuation.

Simply get in touch with details and photographs of your equipment, and we'll help you explore your options. It's an easy way to unlock the value of your current gear and put it towards something new.