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.    

1 SPEED knob adjusts the effect rate
2 FDBK knob adjusts intensity of the effect
3 MODE II switch toggles between 4 and 8 phase shifter
stages (amber LED indicates 8 phase shifter stages)
4 Footswitch toggles effect on/off (blue LED indicates on)

1. Run an instrument cable from your instrument to
the M279’s INSTRUMENT jack and another instrument
cable from the M279’s AMPLIFIER jack into your
amplifier’s input.
2. Start with knobs set to 12 o’clock and the MODE II
switch to its OUT position (amber LED off).
3. Turn the effect on by depressing the footswitch.
4. Rotate the SPEED knob clockwise to increase rate
of effect or counterclockwise to decrease it.
5. Rotate the FDBK knob clockwise to increase
intensity of the effect or counterclockwise to decrease
it.
6. This pedal uses 4 phase shifter stages by default.
For a more pronounced and textured effect, push the
MODE II switch to its IN position to engage 8 phase
shifter stages (indicated by amber LED).

The MXR® Deep Phase™ Pedal is powered by the Dunlop
ECB003 9-volt adapter or an MXR® Brick™ Series power
supply. This pedal cannot be powered by a battery