MXR Bass Synth Effects Pedal - MB301

MXR MB301 Bass Synth Pedal

Vintage Synth Vibes. Modern Bass Control. Total Funk Mayhem.

Step into a world of analog-inspired low-end magic with the MXR MB301 Bass Synth Pedal—a modern tone-shaping powerhouse developed in collaboration with bass tone guru Ian Martin Allison. From vintage funk textures to cutting-edge modulation, this compact pedal transforms your bass into a monophonic synth engine that grooves, pulses, and snarls with precision and punch.

Built for players who crave authentic synth sounds and flexible control, the MB301 is loaded with intuitive parameters, killer tracking, and expressive performance features—all designed to help you shape your sound, push boundaries, and hold down the groove like never before.

Key Features

Thunderous Sub-Octave Generation
The Sub Mix control lets you blend in deep sub-octave content beneath the synth signal for seismic low end that’s perfect for foundational basslines or synth-lead melodies.

Expressive Envelope Filtering
Dial in dynamic filter movement with the Envelope knob—whether you want snappy "quack" for funk grooves or syrupy sweeps for ambient textures, the MB301 delivers.

Lush Modulation Control
Add motion and life to your tone with the Mod knob. From subtle shimmer to bold, rhythmic pulses, you can easily fine-tune the modulation depth for stage or studio settings.

Customizable Synth Voice Sculpting
Refine your tone using:

• Mix – Set your preferred balance of dry and synth signals

• Cutoff – Define the filter’s frequency sweep range

• Resonance – Enhance frequency emphasis for added harmonic richness

Voice & Shape Controls

• Voice Button – Engages additional harmonically tuned oscillators for layered and complex tones

• Shape Button – Switch between triangle, sawtooth, or square waveforms for different synth characters

Eight Artist-Curated Presets
Instant access to tones inspired by iconic tracks including:

• “Thriller” – Michael Jackson

• “Chameleon” – Herbie Hancock

• “Sledgehammer” – Peter Gabriel

• “Head Like a Hole” – Nine Inch Nails

Use the Preset button to cycle through curated sounds by Ian Martin Allison—ideal for rehearsals, gigs, or songwriting sessions.

Advanced Performance Integration

• Stereo Output Mode for enhanced routing flexibility

• External Preset Switching via MXR Split + Tap or compatible controllers

• Expression Pedal Support using Volume(X)™ Series for real-time blending

• Deep Internal Parameter Access including oscillator mix, compression, and tracking settings

Specifications

• Power Requirement: 9V DC (330 mA minimum), center-negative

• Compatible Power Supplies: MXR ISO-Brick™, Strymon, Walrus Audio, Cioks, Voodoo Lab

• Form Factor: Compact pedalboard-friendly design

• Presets: 8 onboard, artist-designed

• Output: Stereo-capable

• Control: Mix, Cutoff, Resonance, Envelope, Mod, Sub Mix, Voice, Shape, Preset Select

Why Choose the MB301 Bass Synth?

• Delivers expressive, analog-style synth textures for bass

• Includes artist-designed presets for instant inspiration

• Designed with deep control for tone shaping and live adaptability

• Exceptional tracking and low-end response

• Fits seamlessly into modern pedalboard setups

From deep groove layers to synthetic leads, the MXR MB301 Bass Synth Pedal puts creative power at your feet—ready to funk, pulse, and perform.