Brand
Used MXR pedals
MXR began in 1972 in Rochester, New York, when Keith Barr and Terry Sherwood turned their audio repair business into a pedal company. The name is short for mixer. The first pedal was the Phase 90, built in a basement and sold at gigs, followed by the Distortion+, the Dyna Comp and the Blue Box, and MXR incorporated in 1974. Its small, tough, brightly painted boxes stood out at a time when most effects came in big enclosures. Early pedals carry a cursive script logo, and block lettering took over in the mid to late 1970s. From 1981 MXR added LEDs and small power jacks. The company closed in 1984, and Barr went on to found Alesis. Dunlop bought the brand in 1987 and restarted it with those same four pedals. When you shop, the logo, the LED and the power jack tell you roughly when a pedal was made, but ask for a photo of the circuit board too.
7 pedals we cover.
MXR · Phase 90
PhaserMXR Phase 90 (Script Logo)
Phase 90 script
- Years made
- 1974–about 1977
- Era
- 1970s
$550–$950 typical ask
23 on eBay
MXR · Phase 90
PhaserMXR Phase 90 (Block Logo)
Phase 90 block
- Years made
- About 1977–1984
- Era
- 1970s
$190–$300 typical ask
12 on eBay
MXR · MXR phaser
PhaserMXR Phase 100
Phase 100
- Years made
- Late 1970s–1984 (MXR); reissued by Dunlop as the M107
- Era
- 1970s
Specs and what to check →
MXR · Distortion+
DistortionMXR Distortion+
Distortion+
- Years made
- 1974–1984 (MXR); reissued by Dunlop as the M104
- Era
- 1970s
$85–$170 typical ask
27 on eBay
MXR · Dyna Comp
CompressorMXR Dyna Comp
Dyna Comp
- Years made
- Early 1970s–1984 (MXR); reissued by Dunlop as the M102
- Era
- 1970s
$120–$290 typical ask
134 on eBay
MXR · Micro Amp
BoostMXR Micro Amp
Micro Amp
- Years made
- 1978–1984 (MXR); reissued by Dunlop as the M133
- Era
- 1970s
$80–$230 typical ask
178 on eBay
MXR · Carbon Copy
DelayMXR Carbon Copy
Carbon Copy M169
- Years made
- 2008–present
- Era
- 2000s
$120–$190 typical ask
121 on eBay
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