Jim Dunlop MXR M87 Bass Compressor

Product ID: 109981

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  • MXR M87 Bass Compressor encased in a compact effects pedal
  • Ideal for use in the studio and onstage
  • Features five controls to completely shape your sound
  • Designed with Constant Headroom Technology
  • Transparent bass compressor with ten gain-reduction LED lights
  • Comes in a compact, durable chassis
  • Small enough to fit on your pedalboard
  • Ensures total clarity during each performance
  • Compresses bass guitar to improve recording and playing live


The Jim Dunlop MXR M87 Bass Compressor is a superb, compact effects pedal which has been primarily designed with bass players in mind. The bass guitar is known for its wide range of low frequency tones, however it can often be beneficial to use a compressor when recording or playing live, and the M87 is the perfect companion to have on your pedalboard.

A compression pedal quite literally compresses a signal output, whether it be for an effect or more as an essential piece of kit to subtly improve your sound. The M87 by Jim Dunlop, unlike similar bass compressors on the market features five control dials; Attack, Release, Ratio, Input and Output. Each individual dial allows you to shape the tone of your bass with precision to achieve the sound you're looking for. The M87 delivers a tone that can often only be made using studio or recording equipment but all in a small, compact effects pedal that can easily form part of your live rig or pedalboard.

The M87 can work both as a bass and studio compressor, largely thanks to the five control dials on board. Whether you need to accomplish transparent compression or understated peak-limiting, the M87 can do this for you.

The designers at MXR have incorporated CHT (Constant Headroom Technology) in the construction of the M87 pedal to guarantee absolute clarity in the tone. Perhaps the most interesting feature of the Bass Compressor is the LED Gain Reduction meter. This gives you an accurate, colourful display to show you the gain reduction level as well as showing the response time of the compressor when the input signal reaches its internal threshold.

The MXR M87 Bass Compressor is without doubt one of the most versatile compression pedals on the market for bassists, enhancing each and every live performance all in a small, hard-wearing stompbox.

ManufacturerJim Dunlop MXR
ModelM87 Bass Compressor
Input Impedance1 MΩ
Output Impedance600 Ω
Controls Release
Gain Reduction LED status bar
Connectors IN Jack
OUT Jack
AC Adaptor Jack (DC 9V)
Power Supply 9V AC Adapter or Battery (Not Included)

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