MXR M300 Reverb

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$209.00 to $235.99 Price Tier: Standard

5.0 (70)

2 Critic Reviews

13 Reviews

All time low price

Find out who is using MXR M300

25 community setups

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Best Reverb Pedals for Guitar | Gear Guides

72 wishlisted

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Page last updated Jul 06, 2026

Pricing and availability

We compare 600+ stores and found this item at 8 stores. Prices updated July 6, 2026.

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Reviews

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4.5 (50)

$235.99 $225.99 $10.00 · All time low

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4.5 (18)

$235.99

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4.6 (299)

$219.99

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5.0 (121)

$215.94 99 available New

$105.00 40 available Used

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5.0 (15)

$235.99

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5.0 (3)

$219.99

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4.8 (88)

$211.00 $209.00 $2.00 · All time low

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£209.00

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Average Price: $208

Standard/Professional

$100

$276+

Price Tier

In the Reverb Effects Pedals category, MXR M300 Reverb is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

Budget

Standard

High-end

Price History

Based on price data from 5 merchants for "MXR M300 Reverb". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Dive into the world of sonic exploration with the MXR M300 Reverb. This compact, yet powerful pedal offers six distinct reverb styles, each meticulously crafted and tuned by the award-winning MXR design team. With a hi-fi analog dry path and a whopping 20 volts of headroom, thanks to Constant Headroom Technology, this pedal is not just a space-maker, but a tone enhancer.

Whether you're looking for a shimmering wash of space with the PLATE setting or a unique blend of echoes with the PAD setting, the M300 has got you covered. The SPRING setting delivers truly authentic amp-based reverb without the use of coiled metal, while the ROOM style adds subtle body and projection to your tone.

The M300 is easy to operate with a simple three-knob setup. The Tone knob allows you to navigate through different reverb styles, offering a variety of sounds at your fingertips. This pedal also supports an expression pedal, giving you the ability to toggle and blend between two different knob setting configurations for even more sonic diversity.

Key Features:

Six distinct reverb styles: PLATE, SPRING, EPIC, MOD, ROOM, and PAD
Hi-fi analog dry path with 20 volts of headroom, thanks to Constant Headroom Technology
Simple three-knob setup and Tone knob for easy navigation through different reverb styles
Supports an expression pedal for toggling and blending between two different knob setting configurations
100% wet mode, stereo input and output capability
True relay or trails bypass for preserving your reverb tails
Compact size for easy integration into your pedalboard
Meticulously crafted and tuned by the award-winning MXR design team.

Product specs

Pedal Type	Reverb
Inputs	1 x 1/4" TRS (instrument), 1 x 1/4" (expression pedal)
Outputs	1 x 1/4" TRS (stereo via splitter cable)
True Bypass	Yes
Power Source	9V DC power supply (included)
Height	1.5"
Width	2.37"
Depth	4.37"

FAQs

What types of reverb are available on the MXR M300 Reverb pedal?: The MXR M300 Reverb pedal features six distinct reverb types, including Plate, Spring, Epic, Mod, Room, and Pad, each crafted for high-quality sound and versatility.
Can the MXR M300 Reverb pedal be used in a stereo setup?: Yes, the MXR M300 Reverb pedal can be used in a stereo setup via a TRS splitter cable, allowing for expansive soundscapes in a stereo rig.
Is the MXR M300 Reverb pedal compatible with an expression pedal?: Yes, the MXR M300 Reverb pedal includes an input for an expression pedal, enabling dynamic control over the pedal's settings during performance.
Does the MXR M300 Reverb pedal have true bypass switching?: Yes, the MXR M300 Reverb pedal features true bypass switching, ensuring your guitar's tone remains unaffected when the pedal is turned off.
What power supply does the MXR M300 Reverb pedal require?: The MXR M300 Reverb pedal requires a 9V DC power supply, which is included with the pedal, and it cannot be powered by a battery.

Videos

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jimdunlopusa

MXR Reverb

jimdunlopusa

MXR M300 Reverb

ProGuitarShopDemos

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MXR M300 Reverb - Demo | PMTVUK

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MXR M300 Reverb

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MXR M300 Reverb Pedal

The Studio Rats

Reviews

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PROS

Excellent sound quality in mono setups
Easy to navigate with just 3 knobs and additional hidden options
Compatible with an EXP pedal for varied reverb transitions
Offers a range of reverb types including plate, spring, and epic modes
Exceptional build quality and durability
Simple to integrate with other pedals and effects chains
Versatile reverb modes cater to different musical styles
Analog dry-through maintains signal integrity
Provides depth and dimensionality to guitar tones
LED indicators, although very bright, are visually appealing

CONS

Some modes (mod and pad) may not appeal to all users
Bright LED can be overwhelmingly intense
Lacks true stereo outputs, complicating setup for stereo rigs
Tone knob quality could be improved, feels loose
Placement of power input may hinder cable management

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about MXR M300 Reverb.

Mods and upgrades

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An expression pedal can be used with the Epic mode to transition from subtle to lush reverb, enhancing dynamic performance capabilities.
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User experience

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Users find the MXR M300's simple control layout and small footprint advantageous over the Boss RV-6, providing more depth and usability without extra complexity.
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Owners who have used the pedal for extended periods often describe it as an 'always on' pedal, integral to their sound.
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Owners appreciate the simplicity of the three-knob interface, which avoids the complexity common in many digital reverb pedals.
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Comparisons

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The Mod setting on the MXR uses pitch modulation, offering a thickening effect at short delays but can be distracting with dissonant jazz chords.
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Owners note that the MXR M300's Spring setting captures classic record tones with drippiness and drive, whereas the RV-6 is more realistic but less characterful.
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The Plate setting on the MXR M300 is praised for its natural pre-delay integration, unlike the Boss RV-6, which can sound hollow at shorter decay times.
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Users report the MXR M300 offers higher quality reverb tones than the Electro-Harmonix Oceans 11, which some find too synthetic.
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The MXR M300's spring reverb is preferred over the Holy Grail's due to a more natural tone without sacrificing the dry signal.
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Use cases and applications

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The Room setting delivers a tight 80's digital room reverb, appealing for funk and traditional jazz, especially with added chorus or doubletracking.
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The Pad mode creates an orchestral effect by blending lower and higher octaves with modulation, ideal for those seeking a unique shimmer experience.
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The Pad and Epic settings are praised for their ambient and drone applications, with the Epic mode being particularly favored for lush, sweeping soundscapes.
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Ideal for ambient genres due to its ability to maintain clarity at higher reverb settings without overpowering the dry signal.
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Features and functionality

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The Mix knob on the MXR M300 controls the reverb level rather than blending it, and does not reach 100% wet without a complex startup procedure.
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The pedal's push pot allows cycling through reverb types, a feature some users find intuitive after initial hesitation.
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The internal switch allows for stereo operation, retaining the original stereo signal through the pedal chain, whether activated or bypassed.
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Value and pricing

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Some users find the M300 comparable to more expensive models like the Strymon BlueSky, noting it's often half the price on the used market.
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Setup and maintenance

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Requires 240 mA, noted as power-hungry, necessitating consideration when planning pedalboard power supply.
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Build quality

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Some users mention the pedal's bright blue LED is overly intense, potentially distracting during performances.
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Critic Reviews

MXR M300 Reverb Review - Guitar & Bass

guitar.com

MXR's M300 Reverb delivers an impressive array of sounds in a compact package, making it a standout at NAMM. Its six reverb algorithms—from classic plate and spring to ambient epic and pad modes—offer depth and versatility. The pedal's low noise floor and stereo capabilities enhance its appeal. While the digital spring reverb isn't perfect and the mod setting may lack inspiration, the M300 excels in creating both vintage and ambient soundscapes, especially with an expression pedal. Despite a slightly confusing effect order, it's a reliable and inspiring tool for reverb enthusiasts.

positive

Full Review

MXR Reverb M300 review | MusicRadar

musicradar.com

The MXR M300 Reverb pedal delivers exceptional sound quality that places it among the top-tier reverb options, despite its limited features compared to competitors. It offers a range of reverb types, including unique settings like Pad and Epic, with authentic sound replication due to its high sample rate. However, the pedal's design has drawbacks, such as an awkward stereo setup and a potentially inconvenient tone knob for live settings. Overall, the M300 is praised for its sound but falls short in user-friendly design elements.

positive

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5.0 out of 5

Based on 13 Reviews and 70 Ratings

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henrik_haugsnes_kaupang

almost 10 years ago

breathtaking

I came across this in a YouTube commercial... I had to watched it again and again... it was love at first listen!! I truly love the sound it gives me!!! WOW!