The MXR Bass Compressor pedal gives you recording-quality compression with Constant Headroom Technology and true bypass switching to keep your low-end clean, tight, and steady.

The MXR Bass Compressor has a complete set of controls that make it easy to fine-tune your sound, from subtle peak limiting to hard squashed compression effects. Let’s take a quick look at these features:

  • ATTACK knob controls reaction time of compression
  • RELEASE knob controls how quickly your signal returns to its uncompressed gain level
  • RATIO sets the degree of compression, from mild 4 (4:1) to extreme 20 (20:1)
  • INPUT knob controls the gain level of the input signal
  • OUTPUT knob controls overall effect volume
  • CONTROLS METER display shows gain reduction level and compressor response time
  • FOOTSWITCH toggles effect on/bypass (blue LED indicates on)

Constant Headroom Technology (CHT) in the MXR Bass Compressor gives you plenty of headroom and clarity in your performance. This totally transparent compressor allows the full dynamic range of your bass to shine through until your signal reaches the compression threshold, which is indicated by ten, highly visible gain-reduction status LEDs.
What is a compressor? In simple terms, a compressor controls the dynamic range of your bass by making loud sounds softer and soft sounds louder. The compression, or “squeezing” tightens the difference between a louder bass signal and a softer signal, producing a much more consistent level of output.

Our MXR Bass Compressor pedal is a professional grade studio bass compressor that gives you clean and tight audio in a small, portable, and road-ready case. Add it to the cart and get yours on its way.

Andy’s Music, a NAMM TOP 100 Dealer, is a family business with family values serving musicians, schools, and houses of worship in the Southeast U.S. Keeping the gift of music alive since 1977.

  • Input Impedance 1 MΩ
  • Output Impedance 600 Ω Max
  • Input Level +14 dBV
  • Max Output Level +8.5 dBV
  • Freq. Response ±1 dB, 20 Hz to 20 kHz
  • Noise Floor* -90 dBV THD** > 0.5%
  • Gain 31 dB
  • Compression Ratio 4:1, 8:1, 12:1, 20:1
  • Attack Time 20 µs to 800 µs
  • Release Time 50 ms to 1.1 s
  • Bypass True Hardwire
  • Requires optional 9-volt power supply or 9-volt battery

      ConditionBrand New (New)
      Brand New items are sold by an authorized dealer or original builder and include all original packaging.learn more
      • M87 Bass Compressor
      Pedal Format
      • Standard

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      Andy's Music

      Mobile, AL, United States
      Joined Reverb:2014

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