MXR M101 Phase 90

MXR M101 Phase 90

  • Like
  • Tweet
  • Pin it
  • Submit

M101 Phase 90, Phaser for Guitar from MXR in the Phase 90 series.

30 user reviews
Prices starting at $80 Average price: $80

MXR M101 Phase 90 tech. sheet

  • Manufacturer: MXR
  • Model: M101 Phase 90
  • Series: Phase 90
  • Category: Phasers for Guitar
  • Added in our database on: 05/15/2006

We have no technical specifications for this product
but your help will be much welcomed


Buy new MXR M101 Phase 90

Sweetwater M101 Phase 90 Phaser Pedal $79.99

MXR M101 Phase 90 user reviews

Average Score:4.7( 4.7/5 based on 30 reviews )
 23 reviews77 %
 4 reviews13 %
 3 reviews10 %

MGR/Rhiannon's review"MXR Jim Dunlop Phase 90"

MXR M101 Phase 90
I bought this timeless classic effect off of Musician's Friend for a mere $59.99 - I'd shopped around forever and believe me, it's the best price you'll get.

The reason I purchased this unit is simple - it is a must have for musicians in every genre!

I love the sound - it's timeless, classic, vintage . . . it can be incorporated into nearly everything from classic rock to contemporary to alternative to heavy metal . . . I find that it is very versatile and sounds great with just about anything.

I can't think of anything that I don't really like about it. Guess it'd be nice if they were manditorily issued with every guitar!!!

The construction is the simple vintage looking orange metal box . . . quality? Ask Jimmy Hendrix.

The bottom line simply is, if you're a guitarist, this is a must-have effect and nothing delivers like the MXR Phase 90 (although, you could up the ante, if you're feelin' froggy and jump on the MXR Phase 100!)

This review was originally published on
MGR/Youth Gone Wild04/12/2003

MGR/Youth Gone Wild's review"MXR Phase 90"

MXR M101 Phase 90
I got it from this place called avenue guitars for $123.

It has a rich, warm phasing sound like no other phaser. It is very transparent and it is slightly distorted which makes it even more warm and makes it sound more distinctive and better sounding. It can be used for slight phased passages of chords or solos, to the swooshing sound to warbly crazy sounds.

It sounds like poop after distortion, but that is okay because it sounds great before distortion, this isn't a reason to not buy this.

It is heavy and very sturdy, very tough.

It is a good buy if you are looking for a no frills phaser that sounds awesome.

This review was originally published on
King Loudness01/31/2012

King Loudness's review"Modern take on the Phase 90"

MXR M101 Phase 90
This version of the Phase 90 is the more modern "block logo" type that was introduced in the later seventies and built up 'til now. It has the same basic look as the classic models, except the logo is in a block of printed text, as opposed to the script of older models. Also the tones out of this model are less subtle than the script logo models... it's a more pronounced phase sound for players that desire something with a little more whoosh. It just has the one speed knob. It can be powered via battery or AC adapter.


Setting up this pedal is pretty simple. It's only got the one control so it's not really putting you through the paces of dialing in a bunch of knobs. It pretty much goes from a very slow and quiet phase to a very jarring and fast one that can cut through a mix quite well. This model sounds a bit more modern than my script logo, and doesn't quite have that treble booster quality that I like in my MXR Phasers. That being said, for someone who just wants a simple and modern sounding Phase 90 and doesn't care about having a more vintage sounding unit, it's great.


This pedal sounds pretty much like you would expect. It doesn't quite have the really intense and crazy settings of some of the BOSS or other phasers with more controls, but instead it offers a more focused sound that's pretty unique and cool. I like using this pedal with a clean sound and some reverb/delay to get a nice wooshing tone to my chords and certain melodies. I don't care for this pedal in a Van Halen type setting (the main reason I wanted a Phase 90) because the sound is too pronounced, even at lower settings.


All in all I think the MXR Phase 90 is a pretty cool pedal. I prefer the script logo models, but it's definitely still a nice buy for someone looking for a nice simple phaser to add to their board. They only run about $90 or so new which is a pretty good price. MXR pedals are pretty reliable, and aside from lacking true bypass, really don't need any mods or changes. If you're looking for a basic phaser with a more modern take on the seventies phase tone, have a look at this one.

nickname009's review

MXR M101 Phase 90
This is MXR's newest line of phasers out there. One of the most simplest effects one can possibly own.

Suppoed to be warm and analog sounding. Giving it that oh go recognizable 'swooshing' sound you hear on nearly every recognizable record.


Very easy, one know adjusts the amount/intensity/speed and depth of the phase sound, turn it to what you think sounds good according to what you're playing and how extreme or subtle you want the phase sound to be.


A lot of players almost always compare this to the script version and make a lot of observations about which one sounds better etc etc. I'm not going to open that can of worms it's just not worth my time.

The phase sound coming from this stock phase 90, however, is quite good. The swooshing sound is quite thick and extreme if you want it to be, however you can set the knob lower and get a more subtle phase sound if you wish. Again, depends on the context of your playing or the song that you're playing etc, set it accordingly. I don't think this pedal's true bypass as far as I know, most MXR pedals are not.

But the effect itself is simple and works. I can't really complain, it does what it's meant to do and does a fine job.


Overall, it's a phaser. It's so simple it's stupid. I don't see why anybody would need to start comparing this to the older versions etc etc. There's really no need, it's just an effect, a swooshing sound that's adjustable with one single knob. I like it, it sounds good to me depending on where you set it and how distorted your signal is or how clean your signal is etc. But this type of effect, in my opinion isn't meant to be complex and over-analyzed, it is what it is and that's that!


MXR M101 Phase 90 images

  • MXR M101 Phase 90
  • MXR M101 Phase 90
  • MXR M101 Phase 90
  • MXR M101 Phase 90

MXR M101 Phase 90 videos

MXR M101 Phase 90 manuals and other files

Discover other products!

Other names: m101 phase 90, m101phase90, m 101 phase 90, m101 phase90, m101, m 101, m101phase 90, phase 90, phase90, M101, M 101

Cookies help us improve performance, enhance user experience and deliver our services. By using our services, you agree to our use of cookies. Find out more.