MXR® M87 Bass Compressor Pedal
The MXR M87 Bass Compressor delivers studio-grade compression in a compact pedal designed specifically for bass guitar. Using Constant Headroom Technology™ (CHT™), it provides clear, transparent compression while preserving low-end definition and dynamic response.
With full control over input, output, attack, release, and ratio, the M87 allows precise shaping of compression behavior, from subtle dynamic control to firm limiting. A 10-segment gain reduction LED meter provides clear visual feedback, making it easy to dial in consistent results for both live and studio use.
Housed in a rugged MXR enclosure and featuring true hardwire bypass, the M87 is built for players who want detailed compression control without sacrificing tone or reliability.
Key Features
-
Studio-style bass compressor in a compact MXR enclosure
-
Constant Headroom Technology™ for clean, transparent performance
-
Five-knob control layout for detailed compression shaping
-
Selectable compression ratios: 4:1, 8:1, 12:1, and 20:1
-
10-segment LED meter for gain reduction and response monitoring
-
True hardwire bypass switching
-
Designed specifically for bass guitar
Specifications
-
Model: M87
-
Input Impedance: 1 MΩ
-
Output Impedance: 600 Ω
-
Maximum Input Level: +14 dBV
-
Maximum Output Level: +8.5 dBV
-
Frequency Response: ±1 dB, 20 Hz – 20 kHz
-
Noise Floor: −90 dBV
-
Total Harmonic Distortion: >0.5%
-
Gain: 31 dB
-
Compression Ratios: 4:1, 8:1, 12:1, 20:1
-
Attack Time: 20 µs – 800 µs
-
Release Time: 50 ms – 1.1 s
-
Bypass: True hardwire bypass
-
Current Draw: 14 mA (LEDs off), 19 mA (LEDs on)
-
Power Requirement: 9V DC (battery or external power supply)
