Is MXR's new Deep Phase mini pedal taking on classic Small Stone phaser tones?

MXR Deep Phase
(Image credit: Jim Dunlop)

MXR is synonymous with phaser pedals, thanks to the iconic Phase 90 and its myriad offshoots. But with its latest release, the Deep Phase, the Dunlop brand appears to be shifting its crosshairs to one of its biggest rivals, the Electro-Harmonix Small Stone.

According to MXR, the Deep Phase is based on an “iconic vintage circuit”, with a “pronounced swoosh, scooped midrange, and a dynamic, voice-like response to your attack”.

It features a pair of knobs – Speed and Feedback – plus a Mode II switch, which swaps out smooth four-stage swirls for more extreme – and dare we say, chewier – eight-stage phasing.

Tellingly, MXR notes that the original design suffered from a volume drop, something that’s apparently remedied in the Deep Phase.

You know what else had a volume drop? The original Small Stone. Team that with the inclusion of a second phase mode and MXR’s nod to an “iconic vintage circuit” (rather than a design derived from the Phase 90), and we could have an even smaller Small Stone on our hands.

Of course, the real proof is in the demos, of which there are currently zero, so we’ll have to wait and, um, hear whether the Deep Phase can truly capture the magic of EHX’s finest.

The Deep Phase is available now for $129. Head over to Jim Dunlop for more info.

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Michael Astley-Brown

Mike is Editor-in-Chief of, in addition to being an offset fiend and recovering pedal addict. He has a master's degree in journalism from Cardiff University, and over a decade's experience writing and editing for guitar publications including MusicRadar, Total Guitar and Guitarist, as well as 20 years of recording and live experience in original and function bands. During his career, he has interviewed the likes of John Frusciante, Chris Cornell, Tom Morello, Matt Bellamy, Kirk Hammett, Jerry Cantrell, Joe Satriani, Tom DeLonge, Ed O'Brien, Polyphia, Tosin Abasi, Yvette Young and many more. In his free time, you'll find him making progressive instrumental rock under the nom de plume Maebe.