MXR Deep Phase Pedal

A vintage-style phase with deep, expressive tones! The MXR Deep Phase pedal offers crystal-clear, pronounced "swoosh" and "sweep" vintage phase tones.

The MXR Deep Phase Pedal delivers uniquely expressive vintage phaser tones with the impeccable build quality and tweakabiity that MXR is famous for.

Unique vintage voice
Based on an iconic vintage circuit, the sound of the Deep Phase Pedal is crystal clear with a pronounced swoosh, scooped midrange, and a dynamic, voice-like response to your attack. Whether you're digging in for fat, fluid chords or gently evoking tranquil textured melodies, this pedal will adapt to your playing intensity. While the original suffered from a serious volume drop when engaged, the Deep Phase Pedal has been carefully designed to match your level when you kick the switch.

From smooth and subtle to turbulent and intense
With just two knobs and a switch, the Deep Phase Pedal offers a wide range of phase tones, from subtle liquid shifting to thick, swirling turbulence. The Speed knob adjusts the effect rate, while the FDBK knob adjusts the intensity and sharpness of the phase peaks. By default, the Deep Phase Pedal runs on 4 phase shifter stages for a smooth effect. The Mode II switch doubles that to 8 stages for twice the number of peaks and a more animated texture.

Compact and reliably built
The MXR Deep Phase Pedal comes in a road-ready MXR mini housing that will take up hardly any space on your pedalboard.


- Expressive vintage phaser tones with fast and easy tweakability
- Dynamic, voice-like response to your attack
- FDBK knob adjusts phaser intensity
- Mode II switch toggles read more between a smooth and highly textured effect
- Impeccable MXR build quality
- Pedalboard-friendly MXR mini housing
WARNING: Cancer and Reproductive Harm -
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Dimensions and Weight in Packaging
Base Item
Shipping Weight: 0.5 lbs
Shipping Dimensions: 6 x 5 x 3 in
Manufacturer Part Number (MPN): M279

For support or warranty questions, please contact the manufacturer:
Phone: 707-745-2722

Reviewers gave this product an overall rating of 5 out of 5 stars. (1 ratings)
Submitted December 14, 2021 by Mark Garner in Covington, LA
"MXR Does It Again!"
Overall: 5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
Okay. Disclaimer time...I'm not the most objective person when it comes to MXR phasers since I already have the mid 80's 'Series 2000' Phaser, along with the Phase 95, Phase 100 and the incredible Custom Shop Vari-Phase 'X' model; the upgraded version with the toe-down on/off switch.Now having said this...I ordered this only days after Zzounds had it in stock. I'd read that it was MXR's take on the EHX Small Stone Phaser. Having never used the Small Stone I had no point of reference but I quickly ordered it because I phind phasers, well, stunning. (Bad Star Trek pun there. Sorry.)It arrived quickly in typical Zzounds fashion and I couldn't wait to try it out.First off, it is NOTHING like the Phase 90 which is perhaps the Greatest Phaser Ever.But...It's a marvelous little pedal with a great many sounds contained therein.The response is 'attack sensitive' meaning the harder you pick/strum......well, the first notes to come through will have a quicker sweep speed then it slows down. This is a new thing to me and I'm still adjusting to it. But I like it. On arpeggiated patterns it adds a nice effect that creates a, uh, sonic diversity.The speed control gives you sweeps which go from comfortably subtle to insanely fast, almost to the point of being unusable. If you're into scary sci-fi sounds then there's a lot here to work with in that vein.This pedal has a switch to toggle between four stage and eight stage phasing. (Personally I find the slower speeds to be better in the eight-stage read more setting.)What REALLY sets this phaser apart from MRX's other phasers is that it has knob to control the Feedback. (I think that is the amount of the signal that is fed back into the effect. The old "Script Logo" phasers had very little Feedback where the "Block Logo" version had an increased level of Feedback.) Whatever it is, I find I get better, more musical tones, when the Feedback isn't set too high - below 12:00.I was disappointed after my first time using this pedal and I resolved to return it as quickly as possible but something told me to play with it some more.The end result is that after having had this pedal for a few weeks, I find that it's a really nice addition to my phaser collection.If your only experience with phasers is the Phase 90 then you'll find this to be something like a weird flanger but if you play with it for a while then I honestly think that you'll grow to like it. (I've owned several flangers and sold off every one of them. They distort the base tone a bit too much for me which is why I almost gave up too soon on this pedal.)While it may not be to everyone's taste, I find myself definitely recommending it to guitarists looking for a different phlavor of phaser.My only criticism is that this is the first MXR 'Mini' pedal I've purchased that didn't come with the 9v power supply.

Musical Background:
Former semi-pro now stay-at-home sofa jammer.

Musical Style:
Rock, rock and rock.Beatles, Yardbirds, Pink Floyd, Jimi and Zeppelin.
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