Description
The Phase 90’s whole design philosophy is one knob, one job: dial in the sweep speed and let the analog circuit do the rest. That simplicity is exactly why it’s survived decades on pedalboards — there’s no menu-diving, just an instantly musical phase shift that ranges from a slow, breathing pulse to a fast, liquid warble, with every classic vintage setting sitting somewhere in between.
Placement in the chain is flexible. Drop it before a dirt pedal for a swirling, saturated push, or run it after distortion/overdrive for that watery, almost underwater swoosh on sustained chords. It’s equally happy on clean rhythm parts, where it adds shimmer and motion without smearing the pick attack, and on lead lines, where it gives single notes a sense of velocity and lift. Beyond guitar, the M101 tracks well with bass, keys, and vocals, so it’s worth keeping on hand for studio work outside a standard guitar rig.
Built around a warm analog circuit, the Phase 90 favors organic, tube-amp-friendly texture over the glassier, more clinical sound of digital phasers — this is the pedal responsible for the shimmering swoosh heard across so many classic Van Halen recordings.
- Single-knob speed control, from slow shimmer to fast warble
- Rich, warm analog phase-shifting circuit
- Powered by a Dunlop ECB003 AC adapter or one 9-volt battery
- Includes two 6″ patch cables for quick pedalboard hookup








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