MXR M102 Dyna Comp Compressor Pedal – Used

Quick Product Summary

The MXR M102 Dyna Comp is one of the best-known guitar compressor pedals, delivering the tight dynamics, increased sustain and distinctive percussive attack that have made the design a pedalboard staple for decades.

This used example is in Good condition, with cosmetic signs of previous ownership and regular pedalboard use. Its simple Output and Sensitivity controls make it easy to move from subtle dynamic control to pronounced, squashy compression without complicated setup.

What Makes the MXR Dyna Comp Stand Out?

Classic Compression Character

The Dyna Comp evens out the level of your guitar signal while adding sustain and a distinctive compressed attack. It can make clean rhythm parts feel tighter and more consistent while helping lead notes hold for longer.

Simple Two-Knob Operation

With just Output and Sensitivity, the M102 is extremely straightforward. Output controls the overall effect level, while Sensitivity increases or decreases the amount of compression.

Percussive Clean Sounds

Higher compression settings can produce the punchy, controlled attack commonly associated with country picking, funk, pop and tightly articulated clean rhythm playing.

Useful for Leads

Increasing Sensitivity can smooth out peaks and extend sustain, making the Dyna Comp equally useful for blues, rock and lead-guitar applications.

Who Is It For?

The MXR Dyna Comp is ideal for guitarists who want straightforward analogue-style compression without menus or extensive parameter controls.

It particularly suits country, funk, pop, blues and rock players, while its simple layout also makes it a strong first compressor for players discovering how compression can shape dynamics and sustain.

At A Glance

Feature	Details
Brand	MXR
Model	M102 Dyna Comp
Effect Type	Compressor
Condition	Used – Good
Controls	Output, Sensitivity
Maximum Compression	36dB
Attack Time	5ms
Release Time	1 Second
Bypass	True Hardwire
Battery Operation	Yes
Power	9V DC
Power Supply	Not Included

Condition Overview

Condition Grade: Good

This MXR M102 Dyna Comp is in good used condition, with cosmetic signs of previous ownership and normal pedalboard use.

What’s Included?

• MXR M102 Dyna Comp Compressor Pedal

• No power supply included

Technical Specifications

Specification	Details
Manufacturer	MXR
Model	M102 Dyna Comp
Effect Type	Compressor
Output Control	Overall Effect Volume
Sensitivity Control	Compression Amount
Maximum Compression	36dB
Attack Time	5ms
Release Time	1 Second
Input	1 x 1/4" Jack
Output	1 x 1/4" Jack
Input Impedance	1 MΩ
Output Impedance	10 kΩ
Nominal Input Level	-5dBV
Nominal Output Level	-12dBV
THD	0.2% Typical at -20dBV, 1kHz
Bypass	True Hardwire
Current Draw	Approx. 3.3mA
Battery Operation	1 x 9V Battery
External Power	9V DC

Power Requirements

The MXR M102 Dyna Comp can be powered using a standard 9V battery or a compatible 9V DC pedal power supply, including Dunlop ECB003 and compatible pedalboard supplies.

Current draw is approximately 3.3mA.

No power supply is included with this used pedal.

FAQs

What does the MXR Dyna Comp do?

The Dyna Comp reduces the difference between louder and quieter parts of your playing, helping produce a more controlled and consistent signal while increasing sustain.

What does the Output control do?

Output adjusts the overall volume of the compressed signal.

What does the Sensitivity control do?

Sensitivity determines how strongly the compressor responds to your playing. Turning it up produces more noticeable compression and sustain.

Can it add sustain?

Yes. One of the Dyna Comp's signature applications is increasing sustain for chords and lead notes.

Is it good for clean guitar?

Yes. The Dyna Comp is particularly effective with clean sounds, where it can create the tight, percussive attack associated with country, funk and pop guitar.

Is it suitable for lead guitar?

Yes. Increased compression can smooth out the signal and extend note sustain for blues and rock lead sounds.

Can it be used before overdrive?

Yes. Placing the Dyna Comp before an overdrive can provide a more consistent signal and increased sustain going into the drive pedal.

Can it be used after overdrive?

Yes, although placing a compressor after drive produces a different response by controlling the already distorted signal. Experimenting with pedal order can produce useful results.

Does it have an attack control?

There is no external attack knob. The M102 uses a fixed 5ms attack time.

What is the release time?

The specified release time is approximately one second.

How much compression can it provide?

MXR specifies a maximum compression level of 36dB.

Does it use true bypass?

Yes. The current M102 specification uses true hardwire bypass.

Can it run from a battery?

Yes. It accepts a standard 9V battery.

How much current does it draw?

Current consumption is approximately 3.3mA.

Is a power supply included?

No. No power supply is included with this used Dyna Comp.

What condition is this example in?

This example is graded Good, with cosmetic signs of previous use consistent with a pre-owned effects pedal.

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