MXR M-101 Phase 90 Pedal

Sku #151100000000000

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MSRP: $114.28   You Save: $34.29 (30%)

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This unit virtually launched the phase craze.

The MXR M-101 Phase 90 Pedal gives you classic phasing with variable speed control. Add shimmer to lead passages or jet-plane resonance to muted strumming. Not just for guitars; it works well with bass, keyboards, and even vocals. Vary the speed from a subtle, long cycle to a fast, watery warble with endless vintage vibrations in between. The MXR M-101 is powered by single 9V battery or Dunlop ECB-003 AC Adapter

  • 2-3/8"W x 4-3/8"H x 1-1/4"D
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by PowerReviews
MXRM-101 Phase 90 Pedal

(based on 8 reviews)

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Reviewed by 8 customers

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Classic sound

By E

from New Orleans

About Me Experienced

Verified Buyer


  • Compact Design
  • Excellent Sound Quality


    Best Uses

    • Home Studio
    • Performances

    Comments about MXR M-101 Phase 90 Pedal:

    Solid,enveloping sound. A bit more intense than the Small Stone.

    Comment on this review


    Phase 90 Pedal

    By Jay Lawson

    from Corbin, Kentucky

    Comments about MXR M-101 Phase 90 Pedal:

    This is a perfect effect for any guitarist, classic sound from 70's rock. This is a must for every guitarist.

    Comment on this review

    (9 of 9 customers found this review helpful)


    Excellent on clean bass guitar, (after mod).

    By Reed

    from Undisclosed

    Comments about MXR M-101 Phase 90 Pedal:

    Hey all,

    I am grateful to finally own this classic pedal, and purchased it from Music 123 for a very reasonable price.

    The MXR M-101 phase 90 initially did not pass my bass rig test, as it was noisy and not lush like the originals were. I did an R28, C11 and C12 easy and free mod and a noon trimmer adjustment to rid me of the noise gremlins inherent with the new block-styled version, and voila, good to go and just what I was looking for as far a as a smooth phaser on the bass guitar in a clean signal environment.

    I own other discount phasers from other companies, and will never use them after this purchase.

    This pedal has just become an important addition to my varied sound palette. Not for every song, but for the one that calls for it.

    Thank you Music 123 for this amazing deal!

    Comment on this review


    Fresh, Warbly, Watery, Amazing Tones

    By TheKunadiun

    from Tucson, AZ

    Comments about MXR M-101 Phase 90 Pedal:

    First of all, don't knock it just because it only has one knob. This is one of those classic guitar pedals in which you don't need millions of knobs to get great sound. You really only need one. You plug this baby in and the first thing you notice is that there is NO crackling or buzzing, or anything that would take away from your guitars sound. If you put your amp on clean (especially if you own a Tube Amp or something with AMAZING clean tones), and turn on the pedal, it makes it sound amazing. The way I describe it is Fresh, warbly, watery, and all around shwoosh. One of my favorite songs to play with this thing is "Breathe" by Pink Floyd. You just have to dig these amazing tones. One factor that I really love about this, is that it lets your instrument shinet through. Its not some digitized piece of "garbage" that takes your guitar's signal and changes it into something its not. It feels great when you play with this thing. Your amp and guitar just shine through. When you play this thing on distortion, I usually turn up the speed a little bit (when I play on clean its usually at or around the 9 o'clock position.) It gives it an awesome fast paced spin that really boosts your solos. The only thing is, is that on distortion or any high gain setting you can hear a little bit of "whooshing" (the effect of the pedal), but its nothing big. Buy this thing and enjoy. You will not regret it.

    Comment on this review

    (9 of 20 customers found this review helpful)


    Real easy to use and sounds great.

    By Tim

    from Irmo

    Comments about MXR M-101 Phase 90 Pedal:

    I bought this pedal hoping to add a dramatic effect on my leads. This was perfect. Its one knob is honestly all you need. This pedal takes about 5 secs. It adds a dramatic swoosh to fast licks and solos which is what I use it for. Its also good for rythms if thats what your into. If your looking for a good phaser, this ones definetly worth the money.

    Comment on this review

    (27 of 62 customers found this review helpful)


    This Pedal will Rock Your Sound!

    By Christian H.

    from Worldwide

    Comments about MXR M-101 Phase 90 Pedal:

    Real Straightforward and simple to use.Decent Price(cheaper than the Phase 90 evh, same guts, different paintjob). This pedal is an unending classic and can be found in hundreds of recordings from really great players since the 1970's to present. I think this pedal sounds much better that the Phase 100 and I have probably used every phase pedal that went to market.Test it out somewhere local, then get it here for less.

    Comment on this review

    (38 of 66 customers found this review helpful)


    Great Phaser!

    By Irishman

    from Atlanta

    Comments about MXR M-101 Phase 90 Pedal:

    One knob, one button, great sound...

    Comment on this review

    (21 of 48 customers found this review helpful)


    Awesome pedal

    By Grateful Musician

    from SF California

    Comments about MXR M-101 Phase 90 Pedal:

    This is the industry standard for Phase. It sounds unbelievably clean. Highly recommended.

    Comment on this review

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