MXR M87 Bass Compressor
The MXR M87 Bass Compressor is a versatile compressor pedal designed for electric bass, featuring CHT "Constant Headroom Technology" for clean and clear sound quality. It offers precise control with knobs for output, input, release, attack, and ratio, along with a 10-LED chain for gain reduction display.

Latest User Reviews
Best compressor for bass pedalboard. A must have for every bassist. Note: attack and release knobs are inverted!
exceptional in every way
Big fan of mxr so I didn't really have to think twice before biting the bullet on this baby. And boy....was she worth it and more! Great both for live, and studio use! I use it primarily for slapping or when i'm playing close to the bridge and desire a little more pop in the sound! Works great alongside other effects like reverb and distortion also! Keeps things tight and mud free! A very diverse pedal that can be utilised for an array of situations! Would Highly Recommend!
Great product
Does what it is supposed to do! Easy to use, the addition of the leds really help understand how much compression is being applied while you play.
It's pretty transparent which is what I wanted, so if you are looking for the pedal to "change" your sound it might not be the Compressor for you.
Overall great pedal!
Very good quality to price ratio
I'm very satisfied with the pedal. It's perfect for bass players that tend to alternate between aggressive and quiet riffs. The blue led tends to be a bit bright and can be blinding in darker environments. You can easily cover it with black tape and still be able to tell wether it's on or off. You'll most likely leave it on most of the time anyway.
Top compressor
After adding the M87 to my rig, the tone of my bass has improved considerably. Taking into account that my fingerstyle is very aggressive, a bass compressor is more than a must. Absolutely recommended!
Technical Data
- Manufactured by MXR
- Released in 2011
- Average price : $279
- Compressor pedal for electric bass
- CHT "Constant headroom technology" for clean and clear sound quality
- Knobs for output, input, release, attack and ratio
- LED chain with 10 LED for "gain reduction" display
- Status LED
- True bypass
- Sturdy metal housing
- Operated with 9 V battery or Dunlop ECB-003 AC adapter (sold separately, not included here)
Reasons to buy
- Transparent and punchy compression based on the renowned 1176 Urei Compressor.
- Highly versatile, suitable for various playing styles and dynamic ranges.
- Durable metal jacket and LED display for easy setup and visual monitoring.
- Well-constructed and great sounding, offering the ability to be smooth and transparent.
- Effective in both live and studio settings, recommended by professional bassists.
Reasons to avoid
- Some users found initial difficulty in achieving the desired sound, requiring experimentation.
- Not entirely transparent; may alter the tone, which might not suit players seeking absolute clarity.
- Medium to high price point compared to other bass compressors in the market.
- The brightness of the blue LED may be distracting in darker environments for some users.
You may also like
2023 100%
2023 100%
2023 100%
2023 100%
2023 100%
2023 100%
2023 100%
2023 100%
2023 100%