MXR M107 Phase 100

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$149.99 to $173.00 Price Tier: Standard

4.5 (67)

9 Reviews

Find out who is using MXR M107 Phase 100

13 community setups

92 wishlisted

213 saved

Page last updated Jul 05, 2026

Pricing and availability

We compare 600+ stores and found this item at 6 stores. Prices updated July 5, 2026.

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4.5 (7)

$159.99

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4.5 (8)

$159.99

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4.5 (91)

$159.99 New

$140.79 Used (Like New)

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5.0 (25)

$149.99 38 available New

$61.00 21 available Used

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4.0 (36)

$159.99

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4.6 (43)

$175.00 $173.00 $2.00 · All time low

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Average Price: $146

Standard/Professional

$75

$201+

Price Tier

In the Phaser Effects Pedals category, MXR M107 Phase 100 is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Standard

High-end

Price History

Based on price data from 4 merchants for "MXR M107 Phase 100". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Introducing the MXR M107 Phase 100, a beloved classic in the world of phaser effects pedals. Celebrated for its ability to cover a wide range of phasing sounds, the Phase 100 expands upon the dreamy, lush sounds of its cousin, the iconic MXR Phase 90, by adding adjustable intensity for sweep width and notch depth.

The MXR M107 Phase 100 is not just a guitar effects tool but a versatile studio tool that can add distinct character to vocals, synths, drums, and more. With its 4 preset intensities, you can dial in everything from subtle swooshes to deep, resonating modulations. The speed knob allows you to control the intensity of the phase effect, giving you the freedom to decide how mild or wild it gets.

Whether you're a fan of classic 70s phasing sounds or modern, more dramatic phasing effects, the Phase 100's rotary switch for different waveforms will not disappoint. This pedal's versatility and tweakability make it a perfect choice for musicians and producers looking to add depth and excitement to their sound.

Key Features:

10 stages of programmable phase shifting
Adjustable intensity for sweep width and notch depth
Regeneration in 2nd and 4th position
Four selectable preset intensities
Broad speed range
Can be operated via a power supply or with a 9V battery
Status LED
Excellent for guitars, bass, keyboards, and as a studio recording tool

Product specs

Pedal Type	Phaser
Analog/Digital	Analog
Inputs	1 x 1/4"
Outputs	1 x 1/4"
Bypass Switching	Hardwire
Power Source	9V DC power supply (sold separately)
Power Usage	6mA
Batteries	1 x 9V
Height	2.37"
Width	3.62"
Depth	5"
Weight	1.28 lbs.

FAQs

What type of power supply does the MXR M107 Phase 100 require?: The MXR M107 Phase 100 requires a 9V DC power supply, which is sold separately. It can also be powered by a 9V battery.
Is the MXR M107 Phase 100 suitable for both guitar and bass?: Yes, the MXR M107 Phase 100 is suitable for both guitar and bass, offering rich, sweeping phaser effects that enhance the tonal range of both instruments.
How does the MXR M107 Phase 100 differ from the Phase 90?: The MXR M107 Phase 100 offers more versatility than the Phase 90, featuring a 4-position rotary switch for selecting different phaser intensities, providing a wider range of phasing effects.
Can the MXR M107 Phase 100 be used in a pedalboard setup?: Yes, the MXR M107 Phase 100 can easily be integrated into a pedalboard setup thanks to its compact size and standard 1/4" input and output jacks.
What kind of bypass does the MXR M107 Phase 100 use?: The MXR M107 Phase 100 uses hardwire bypass switching, ensuring that your signal remains unaffected when the pedal is not engaged.

Videos

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ProGuitarShopDemos

MXR M-107 Phase 100

ProGuitarShopDemos

MXR Phase 100

jimdunlopusa

MXR Phase 100 in 100 Seconds

docSanchezFX

MXR Phase 100 demo

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MXR Phase 100 and the Garcia Guitar Rig

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MXR Phase 90 and Phase 100 Comparison

mudshrimpmoe

MXR PHASE 100 BASS DEMO

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🌊★ MXR Phase 100 (Phase Shifter)

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Reviews

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PROS

Offers a selection of phasing intensities, enhancing versatility
Works exceptionally well on both keys and guitar, broadening its application
Maintains sound clarity even with high-output humbuckers, avoiding treble loss
Optical phaser design provides higher headroom and complex, deep tones
Features a variety of waveforms for diverse sound options
No noticeable tonal loss when bypassed, ensuring signal integrity
Provides a unique, liquidy tone with flanger-like qualities
Compatible with a wide range of instruments, including vocals and synths
Superior to similar pedals for achieving lush Hammond organ sounds
Integrates well into effects chains, pairing easily with other modulation effects

CONS

Some users find the EQ tone bright, nearly harsh
A few users find it sounds artificial at all settings
Lacks a battery access cover, complicating battery changes
Larger size may be less convenient for some pedalboards
Intensity control's mirrored positioning can be confusing

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about MXR M107 Phase 100.

Setup and maintenance

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Placing the Phase 100 at the front of the amp, rather than in the effects loop, can resolve volume discrepancies and improve clarity and depth.
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Comparisons

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Users find the Phase 100 significantly more versatile than the Phase 90, offering a broader range of adjustments and unique sound possibilities.
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A vintage Phase 90 is favored for its classic sound, whereas the Phase 100 provides a broader range of sounds, but neither can replicate the other's unique tones.
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It’s noted that after 10 stages, phasers like the Phase 100 begin to mimic chorus effects, contrasting with simpler phasers like the Phase 45 or Phase 90.
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Features and functionality

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The Phase 100 excels in delivering quality sounds across lighter, spacier play styles as well as thicker, heavier mid to high-gain styles.
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The Phase 100 offers four different modulation modes, adding significant versatility for users seeking varied phaser effects.
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The Phase 100 utilizes a 10-stage phaser, creating a deeper, more pronounced sweep compared to the 4-stage Phase 90, leading to a chorus-like effect.
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Use cases and applications

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A tactically placed compressor in the pedal chain may address the Phase 100's quieter output compared to newer MXR pedals.
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Users have successfully integrated the Phase 100 with synth gear, finding it to be a favorite for creating diverse soundscapes.
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Owners find the Phase 100 pairs well with fuzz pedals, enhancing its univibe-like qualities without overwhelming the signal.
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Value and pricing

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The Phase 100 is available new, contrary to some perceptions of it being out of production, providing buyers with more purchasing options.
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User experience

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Users appreciate the Phase 100's subtlety, as it complements rather than overpowers the original notes, making it a preferred choice for modulation.
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4.5 out of 5

Based on 9 Reviews and 67 Ratings

5 star

4 star

3 star

2 star

1 star

fahq

270

about 2 years ago

Perfect phaser pedal

I like simple pedals. This is a classic simple phaser pedal. Easy to use and get that full space lift off sound all the way to just a subtle feel when using with a clean tone. No complaints at all. Not sure if I would need anything more in a phaser pedal.

Roles:

Singer Guitarist

Genres:

Rock Alternative rock Psychedelic rock

From Gear Setup

andrabian

182

over 7 years ago

sorry for my disappointment

This is no doubt ?THE? phase tone that everybody's after, so maybe because of its fame, it was a major disappointment for me, sorry for that. I had and I even have phasers that sound better to my ears, my old Small Stone, in the first place. I'm unable to fork out a decent subtle or prominent sound from it, it sounds artificial at all settings. I even cannot reproduce an authentic Stones sound with it, despite that they were reportedly using Phase 100 on Some Girls and nearby tours. It does not help either that the intensity control was surprisingly mirrorred sometime during its long production years, so when somebody is referring to "position 2" you can never be sure which setting he's meaning. Some sources state that the old "script logo" version, or Eddie Van Halen's signature version sounds different and better. I cannot confirm that as yet with no chance of comparison, but truth may be in it, as my vintage Small Stone sounds warmer and fuller than the current nano version of EHX.

Roles:

Guitarist

jimmarchi1

41029

7 years ago over 7 years ago

a smalls tones a whole different approach to phasing and doesn't filter things much at all whereas the bandwidth of the mxr stuff is highly limited... small stone guys never like mxr phasers. Took me years to warm up to these guys. The odler ones definitely sound different than the newer ones just like the 2nd edition small stone I sued to use was different than my Russian ones which were in turn different than the new one I have around. I recently had to help a guitarist produce a some girls, shattered sound for a record Iw as engineering and my newer mxr stuff would not cut it. It was far too overtly phasey. The small stone was not tight enough sounding. We wound up going to a chorus or flanger to approximate it believe it or not. It wasn't dead on but it captured more of the warbly warmth than any new mxr pahsers could.

andrabian

182

7 years ago over 7 years ago

Yes, you may be right that those sounds fall closer to a mild warm flanger than any of the current phasers, but I learned to like phasers just for themselves. I've found that there's no two similar phasers, they are somewhat unpredictible, but I found the Phase 100 the least likeable, I just feel it unnecessary at each settings, probably because the filtering you refer to. I used to have an Ibanez PT-9 that also had a character of it's own, that I cannot reproduce with neither the MXR nor the Small Stone.

jimmarchi1

41029

7 years ago over 7 years ago

I have owned more phasers, flangers and choruses then probably anyone frequenting this site... there are so many factors contributing to differences in phase tone circuit wise... the ehx and mxr sounds are just polar opposites in EVERY regard design-wise

jimmarchi1

41029

7 years ago over 7 years ago

by the way, definitely try a phase 45... tis like the bad stone of mxr phasers and the mxr sound mates well with the 4 stage versus 8 stage phasing. If you can find one try a mutron… that's my desert island phaser. The I or the II, both are great.

whereismyyymind

987

about 5 years ago

Not a phase 90 with added features

Most people buying a Phase 100 are probably going the way trying to replace a lovely but limited Phase 90 because they wish to add some nice features like a width control etc. Most of them will then recognize that a Phase 100 is nothing like a Phase 90 soundwise (and also circuit-wise): It is kind of thinner, more open sounding, there is a volume drop when engaged but nevertheless the sound is great especially when playing fat sounding humbucker guitars. In the end it is a matter of taste but I really like it!

Roles:

Guitarist Music Producer

Genres:

Rock Pop Alternative rock

billy_cobb1

249

about 6 years ago

Hmmmmmmmm ...

After using Phase 90s for the last 45 years, it's DIFFERENT. There's a Source Audio Mercury Flanger on my present board with a 6 stage Phase Shifter preset installed, so I'm finding a few interesting combinations.

Roles:

Singer Guitarist Bassist

Genres:

Rock Pop Blues