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Average Price: $90
Standard/Professional
$50
$201+
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Based on price data from 6 merchants for "MXR M102 Dyna Comp". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Introduce yourself to the iconic MXR M102 Dyna Comp, a compressor pedal that's been a cornerstone of professional guitar rigs around the globe. This versatile effects pedal is brought to you by Dunlop and offers a simple yet potent way to add sustain to solos, even out volume levels, or create a distinctive percussive "click" for clean rhythm tones.
With just two user-friendly controls—Sensitivity and Output—you can precisely dictate the amount of compression and output level. This pedal is powered by either a 9V battery or optional AC adapter, promising an ultra-clean compression effect devoid of noise. The MXR Dyna Comp is appreciated for its ability to produce infinite sustain and dynamically shape your tone. It achieves this through an exclusive limiter circuit that adjusts the gain to keep your output signal constant.
In addition to enhancing sustain, the MXR Dyna Comp can produce a signature "clicky" clean tone when cranked up, a sound that has graced countless pop and rock hits. With its compact housing and straightforward operation, the MXR Dyna Comp fits comfortably on any pedalboard and is a favorite among guitarists of all genres.
Key Features:
- Proprietary limiter circuit for constant output signal
- Two user-friendly controls: Sensitivity and Output
- Produces a signature "clicky" clean tone
- Durable die-cast chassis for stable operation
- Powered by a 9V battery or optional AC adapter
- Renowned for its ability to produce infinite sustain
- Compact design suitable for any pedalboard
Product specs
| Brand | MXR |
| Model | M-102 Dyna Comp |
| Finish | Red |
| Year | 1995 - 2025 |
| Made In | United States |
| Categories | Compressor Pedals |
| Pedal Format | Standard |
FAQs
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What is the primary function of the MXR M102 Dyna Comp Compressor Pedal?
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The MXR M102 Dyna Comp Compressor Pedal is designed to tighten your guitar signal, enhance sustain, and create a percussive, clicky sound often heard in classic recordings.
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Does the MXR M102 Dyna Comp work well with bass guitars?
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While primarily designed for electric guitars, the MXR M102 Dyna Comp can be used with bass guitars, although it may not retain the low-end integrity as effectively as bass-specific compressors.
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What power supply options are compatible with the MXR M102 Dyna Comp?
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The MXR M102 Dyna Comp can be powered by a 9-volt battery or a Dunlop ECB003 9-volt adapter. It is also compatible with the DC Brick™, Iso-Brick™, and Mini Iso-Brick™ power supplies.
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How does the MXR M102 Dyna Comp affect guitar tone?
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The MXR M102 Dyna Comp enhances your guitar tone by adding sustain and compressing the signal, resulting in a tighter sound with more presence and clarity.
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Is the MXR M102 Dyna Comp suitable for live performances?
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Yes, the MXR M102 Dyna Comp is suitable for live performances, providing consistent compression and sustain to help your guitar stand out in a mix.
Videos
ProGuitarShopDemos
MXR Dyna Comp Compressor Pedal
Reviews
PROS
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Adds significant sustain, useful for solos
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Boosts volume for leads effectively
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Simple to use with minimal controls
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Enhances clean tones remarkably well
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Tightens rhythm playing and arpeggios
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Versatile across genres, from metal to country
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Can improve tone quality when used correctly
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Provides a noticeable improvement in sound even with minimal settings
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Works well with both distortion and clean settings
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Preferred over other compressors for its unique sound
CONS
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Lacks an attack control for more nuanced dynamics
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May not be compatible with all fuzz pedals
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Might be too simple for those seeking more control
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Introduces noise, especially through dirty amps
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Adds "white noise" to the signal chain
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The casing on newer models may feel less robust
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Can cut power and dull dynamics if not used carefully
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Some find it too noisy without a noise gate
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Limited functionality with bass guitar
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Can overly color the tone, affecting clarity
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about MXR M102 Dyna Comp.
Use cases and applications
User experience
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Older models, like those from the late '70s, are noted for their reliability but require battery power, which some users find inconvenient.
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Some users prefer knob settings at 3:00/9:00, which suggests a unique personal preference for achieving desired tone.
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Some owners note that the Dyna Comp adds a "color" to the tone, which may not be ideal if a transparent compressor sound is desired.
Source
Features and functionality
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Running sensitivity low and output high thickens clean tones without noticeable compression, according to user reports.
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A popular setting among users is having the output at unity and sensitivity all the way down, balancing volume without compression.
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Some users experience radio interference with the pedal, suggesting it may amplify unwanted signals.
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The Dyna Comp is known to alter the phase of the signal, which can be corrected using a signal blender like the OBNE Signal Blender.
Source
Mods and upgrades
Critic Reviews
4.5 out of 5
Based on 53 Reviews and 338 Ratings
184
basic and outdated
its not bad, i just think its not worth that much money plus its pretty old. way better options there, good clones too.
1184
The GOAT of squeeze
Had to let go of my TC Electronics Hyper Gravity comp. The digital nature of that pedal started giving me issues on my board (it was mainly a power consumption thing). Ended up trading it in for an MXR Dyna Comp at Bills Music and I legit could not be happier. It color's your tone but in a real classy kind of way. My cleans are even and having it in the chain before my drives makes the overdrives on my board stand out and sound more musical. Can't recommend it enough, it's dead simple to use and works in a variety of genre's. If it's good enough for most professional country players, Steely Dan, Gilmore and Eddie Van Halen (just to name a few), it's good enough for most guitarists in almost every genre.
476
MXR Squishy Comp
I have a love/hate relationship with this compressor - it sucks the high frequencies from your tone, but it gives you that infamous squish that you've heard on all classic records. On clean, you sound like Chic. If you use it before your OD's, it pushes them a little bit more just like a boost and when you place it after OD's, it keeps overall volume just fine (but as mentioned before - it sucks some of your highs).
Build quality is great and I prefer it's switch more than on any EHX pedal.
Preferred Settings + Usage:
Output - 3:00, sustain 9:00
505
Perfect
If you're trying to compress your sound, get this pedal. It's not a rackmount or some huge studio compressor; this does the same thing.
Ottimo
Ottimo compressore per chitarra, generalmente lo utilizzo con un settaggio leggero per accentuare le distorsioni (in pedaliera sta pre Ds-2) ma ogni tanto è anche divertente esagerare con la comp per tirare fuori quel sound caratteristico stile "Under the Bridge".
40997
can't beat it with a stick, but you can with a Ross
I recently bumped into my block logo, 90s dynacomp while cleaning up my gear closet. I was looking for my SD1 and BF2 (not sure if I sold them) and found this gem instead. I was really into this pedal at a couple periods of my playing career. Great lead boost into a slightly dirty amp, the extra sustain allows you to play with a little less gain when using a strat and the midrange presence lift really helps cut a mic. Great into a clean fender for chiken pickin' Dare I add this to my board again? Maybe with analog chorus? How 80s of me!
But yeah, if you want classic guitar compression that's not studio grade and just does its thing? this is a great place to start. It colors your tone, but that's the point. Great in a dense band mix. They say the script logo is better but I could never hear a substantial difference. A grey Ross definitely sounds better without adding a bunch of features like booooo-teek versions. Set and forget squash that used to be one of the few pedals I couldn't do without in the recording studio. I am really inspired to plug this in again after replying to a compressor thread in the guitar forum! Everyone should have this or a boss compressor around. They are cheap enough.
Simple, straightforward and suprisingly versatile.
I love everything about this pedal. Works especially good on producing that punchy and sparkly jangle sound.
659
Exactly what you expect
Say what you will of the Dyna Comp, it certainly can't be accused of not having enough compression; I've never had the sensitivity up beyond 1/2 o'clock, which is plenty heavy compression. Setting the output to a little above unity allows you to get a decent clean boost out of the pedal, and even with the sensitivity dialled way back, you get that satisfying pop of the note for all your country needs, and a sweet, natural sounding sustain. I use mine in front of a Soul Food and a Custom Badass '78, and the Dyna Comp gets a smooth crunch out of the Soul Food, and gives the C' Badass the sweet sustain the pedal somewhat lacks on its own. My one gripe is that the perfect compression setting for the higher strings/notes will really muddy the lower notes at times, although I imagine that's true of most compressors. Still, it's one of the cheaper compressors on the market, and I still highly recommend it!
640
It works .... but
I'm using this as the first pedal in my setup and it's a bit disappointing to have to put a noise gate right after it. Compression functionality is pretty good but it's quite noisy, even with guitars I have that don't hum very much. Can't blame my Carl Martin switching power supply for this.
Artist usage
Add artist
Used on Blood Sugar Sex Magik, John used the Dyna Comp on the solo of "Mellowship Slinky in B Major" and for the intro of "Under The Bridge" and if you go on YouTube and look up "John Frusciante recording Mellowship slinky in B Major solo" you can see it by his right knee next to the time.
You can see this pedal featured in the new setup of RHCP for Unlimited Love Tour.
A Compression Pedal used by David Gilmour used in the Pink Floyd albums-Animals,The Wall,The Final Cut,The Division Bell and in Pulse
Kevin is seen sitting in front of his pedal board, and the MXR M-102 Dyna Comp Compressor Pedal is toward the middle in front of his right leg.
In this photo, which was uploaded on Instagram by Billie Joe Armstrong, the MXR Dyna Comp pedal is visible.
The MXR Dyna Comp is visible in a photo of Jonny’s guitar board at Philadelphia’s Franklin Music Hall on 8 July 2023, as indicated on this King of Gear post.
During the 1991 Japan tour with Eric Clapton, George Harrison used the MXR M102 Dyna Comp, as documented by Bekkoame.
In this user-uploaded photo, Noel Gallagher is shown using the MXR M102 Dyna Comp compressor pedal.
The Edge acquired a vintage MXR M102 Dyna Comp, identifiable by its block logo, in the early 1980s, as seen in a user-uploaded photo from A2athot.
page 110-111 of "To Live Is To Die" book stated he used this along with his Morely fuzz wah
by John Marshall "He used to like getting different sounds: the power fuzz wah, and he had a red compressor that he used on the solo.
In this video from DunlopTV, Bryan speaks with Chris "Frank" Leahey, Adam's guitar tech. At 1:28 we can see Adam's MXR Dyna Comp which "adds a little more sustain" when used in conjunction with Adam's Talk Box.
Album Usage
The MXR M102 Dyna Comp has been featured on the following albums:
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Used With
Based on how musicians on Equipboard use MXR M102 Dyna Comp, it is most commonly used with the following gear.
Community setups
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