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Turn your bass into a filthy funk machine with the MXR Bass Synth - a powerful monophonic pedal built for groove-chasers, tone sculptors and genre-hoppers alike. Created in collaboration with Ian Martin Allison, this pedal is dripping with analog-style synth textures, syrupy envelopes, and thunderous sub-octaves that call to mind the iconic low-end of Stevie Wonder, Michael Jackson, Parliament Funkadelic and beyond.
At its core, the MB301 delivers three selectable waveforms, triangle, sawtooth and square, and introduces harmonically tuned oscillators with the Voice button for a more complex synth timbre. The Sub Mix knob lets you set how much earth-shaking sub is blended in, while Envelope and Mod controls fine-tune filter movement and pulsating textures, from smooth sweeps to wild modulation. Additional controls for Mix, Cutoff, and Resonance give you precise tone shaping.
For players who want to dive straight into the groove, the Bass Synth includes eight artist-designed presets inspired by tracks like Thriller, Chameleon, Sledgehammer and Head Like a Hole. A tap of the Preset button cycles through ready-to-go patches that feel instantly usable and mix-ready.
And for the tweakers? It gets deeper. Hidden parameters include oscillator mix, mod routing, compression, tracking behaviour, and stereo output mode. Add external control with an MXR Split + Tap, Tap Tempo Switch, or an expression pedal to blend and morph settings live.
This is instant synth bass magic with pro-level tracking, deep low-end punch, and a truly interactive interface, all packed into a rugged MXR enclosure that begs to be on stage.
Key Features:
- Monophonic bass synth pedal with analog-style tone
- Designed with Ian Martin Allison
- 3 selectable waveforms: triangle, saw, square
- Sub-octave blend with Sub Mix control
- Voice button for additional oscillators
- Envelope and Mod controls for expressive filter movement
- Mix, Cutoff, and Resonance for detailed shaping
- 8 built-in presets inspired by legendary synth bass tones
- Deep editing options including compression, stereo output, tracking style
- Tap and expression pedal support (optional)
- Rugged MXR build quality