Used MXR Phase 90

🇺🇸MXR1974–presentStill in productionAlso known as: Phase 90, M101
For sale now:962 listings
Price range:$50–$839
Most common:good

About the MXR Phase 90

The MXR Phase 90 has been in MXR's lineup since 1974 — over 52 years of continuous production, which speaks to how well it has been received. MXR has been building instruments in the United States since 1972. You may also see this listed as "Phase 90", "M101" — they refer to the same instrument.

Buying Guide

  • 1Test the footswitch — it should click firmly and engage/bypass cleanly without pops or signal drops.
  • 2Check that all knobs turn smoothly through their full range. Scratchy pots are cheap to fix but indicate age or neglect.
  • 3If the pedal uses a battery, check the battery compartment for corrosion. If it uses a power supply, test with a standard 9V center-negative supply.

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