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- Тype: Compressor
- True Bypass: Yes
- Battery Operation: Yes
- Inputs: Jack 6,3 mm TS
- Outputs: Jack 6,3 mm TS
Dunlop MXR M87 Bass Compressor Bassguitar Effects Pedal
The MXR M87 Bass Compressor brings studio-grade dynamics control to the bass pedalboard, delivering transparent compression with full-range clarity. Built around MXR's CHT (Constant Headroom Technology), it preserves low-end punch while taming peaks and evening out your dynamics. Five front-panel controls cover everything from subtle peak limiting to hard squash, with a 4-position Ratio selector spanning 4:1 to 20:1. A row of ten gain-reduction LEDs gives instant visual feedback on how hard the unit is working.
- True bypass switching keeps your dry tone intact when the pedal is off
- CHT (Constant Headroom Technology) provides clean performance with hot-output basses
- 10-segment LED meter (green/orange/red) shows real-time gain reduction
- Runs on a 9V battery or standard 9V adapter for flexible pedalboard placement
MXR M87 Bass Compressor — Studio Dynamics for the Stage
The MXR M87 Bass Compressor delivers recording-quality compression in a stompbox built for bass. It keeps low-end frequencies tight and clean, covering gentle peak limiting to aggressive squash without losing the instrument's fundamental character. This model is the right choice for bassists who want transparent dynamics control that preserves natural tone while adding consistency and punch.
Constant Headroom Technology and Visual Feedback
What separates this pedal from typical bass compressors is its CHT (Constant Headroom Technology) circuit, delivering clean headroom even with high-output basses. Ten gain-reduction LEDs show exactly how much compression is applied, and an internal switch disables the meter for a darker stage look.
Compression Controls — Dial in Your Dynamics
The control layout covers every core compression parameter a bassist needs.
- Controls: Output, Release, Attack, Input, Ratio — five-knob layout plus a 4-position Ratio selector spanning 4:1 to 20:1
- Attack knob: clockwise speeds up reaction time; counterclockwise slows it for more transient bite
- Release knob: variable range controlling how long reduced gain is held before returning to the original level
Signal Path — True Bypass and Connectivity
Signal integrity is preserved through a hardwired true bypass circuit, so the dry bass tone passes through untouched when off, and side-mounted jacks keep the pedalboard layout tidy.
- True Bypass: Yes — hardwired switching with no buffering or coloration
- Inputs: Jack 6.3 mm TS — standard mono instrument input
- Outputs: Jack 6.3 mm TS — mono output to amp, DI, or next pedal
Power and Construction — Built for the Road
Runs on a single 9V battery or any standard 9V DC adapter, integrating easily into any pedalboard power setup. The housing matches the footprint of the classic MXR Phase 90.
- Battery Powered: Yes (9V) — internal compartment for cable-free operation
- External Power: 9V DC adapter (Dunlop ECB003 or compatible), plus DC Brick, Iso-Brick, and Mini Iso-Brick supplies
- Package Contents: Manual — printed guide explaining the control layout
Тype: Compressor
Compressor evens out the dynamic range of a sound by reducing the volume of louder parts and boosting quieter ones. The result is a more consistent, tighter tone with better volume control. Compressors are commonly used on guitar, bass, and vocals to maintain a balanced and clear sound in a mix.
Controls
- Ratio
- Release
- Output
- Input
- Attack
True Bypass: Yes
It has a true bypass function, which ensures that when the effects are turned off, the signal passes directly through the unit without influence or degradation.
Battery Operation: Yes
Battery power provides flexibility and mobility. This feature allows you to use the device anywhere, even in places where an electrical outlet is not available. Battery power is ideal for situations that require portability and independence from the grid, whether you're outdoors, on the road, or in a location with limited access to electricity.
Inputs: Jack 6,3 mm TS
A universal connector used to connect various audio devices.
Outputs: Jack 6,3 mm TS
A universal connector used to connect various audio devices.
Тype
True Bypass
Number of Buttons
1
Number of Outputs
1
Number of Input Ports
1
Colour
Package Contents
UK/EU Power supply included
Made in
USA
All reviews come from verified customers who have purchased a product from us in the past.
AI summary of reviews
Based on the number of reviews: 18
Strengths
- Sound quality: Customers consistently praise the excellent sound quality, natural compression, and transparent audio output of the device.
- Visual indicators: The LED indicators and bargraph display are highly appreciated for clearly showing when the compressor is active and aiding in precise settings.
- Ease of use: The compressor features clear controls and is perceived as user-friendly, making it easy to operate.
- Versatility: While primarily a bass compressor, customers note its effectiveness for other instruments as well, highlighting its professional level of adjustability.
Weaknesses
- Documentation: Some customers note the lack of a Czech manual and examples for beginners, and find the included instructions to be misleading.
- Packaging: One customer reported that the product was not securely packed, causing it to move freely inside the box during shipping.
What customers repeat
Verdict
Documents
Instructions for use
Manufacturer information
Safety instructions
Please refer to the user manual for the specific safety instructions for this product.
