🧬 MXR Bass Envelope Filter (M82) – Funk-Ready Analog Filter for Bass
The MXR M82 Bass Envelope Filter delivers classic auto-wah-style funkiness with a modern level of control, all without compromising low-end clarity. It’s a 100% analog envelope-controlled filter designed specifically for bass guitar, offering dynamic touch-sensitive filtering that reacts expressively to your playing.
With separate Dry and FX blend controls and a highly tweakable filter section, the M82 is one of the most versatile and stage-friendly bass envelope filters available.
🔧 Key Features
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5-knob layout for precise tonal shaping:
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Dry – Adjusts the level of clean signal (retain low-end punch)
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FX – Controls the level of the wet, filtered signal
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Decay – Sets how long the filter sweep lasts
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Q – Adjusts resonance for a narrow squelch or wide vowel-like effect
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Sensitivity – Controls how strongly your playing triggers the filter sweep
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100% analog signal path
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True Bypass switching
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Optimized for bass – no loss of low frequencies
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Compact footprint – pedalboard-friendly size
✅ Pros
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Fat, funky tones right out of the box
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Blend controls let you preserve punch while adding movement
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Responsive to playing dynamics — slaps, pops, and fingerstyle all produce different sweeps
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Can be subtle or aggressive depending on Q and Sensitivity settings
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Sturdy, metal chassis built for gigging
💬 Player Impressions
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“The filter opens up just right with slap playing—super funky.”
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“Having separate dry and FX blend knobs is a game-changer for live tone.”
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“Sits perfectly after distortion or fuzz.”
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“More tweakable than the EHX Bassballs or Boss AW-3.”