MXR1974PhaserModulation$Budget($50–250)
MXR Phase 90
Guitarists wanting an instant, classic swirling phase texture with zero tweaking required.
Find on ReverbUsed-gear listings, graded conditionCheck prices on eBayBroader inventory, live auctions
Check your gain staging
Free tool — convert dBu/dBV, chain gain stages, and check your headroom before it clips.
Strengths
- Single-knob operation makes it one of the simplest, fastest effects to dial in on any board
- Warm, swirling analog phase sound became a signature texture on countless recordings
- Small, durable orange enclosure takes up minimal pedalboard space
Trade-offs
- Only one control (speed), offering no depth/feedback shaping compared to more complex phasers
- Script vs. block-logo vintage revisions sound noticeably different, creating buyer confusion
Full Specifications
| Specification | Value |
|---|---|
| Brand | MXR |
| Model | Phase 90 |
| Era | 1974 |
| Typical Price Tier | Budget ($50–250) |
| Effect Type | Phaser |
| Circuit | Analog |
| True Bypass | No |
| Power | 9V battery/adapter |
| Controls | 1 knobs |
| Tap Tempo | No |
| I/O | Mono in/out |
A relative used-market guide, not a live quote — real prices vary by condition, region, and timing. Check the Reverb/eBay links on any item for current listings.
Similar Modulation
Match Score Explorer
Weight what matters to your workflow. Every deck is re-scored live against your priorities, benchmarked against the MXR Phase 90.
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This deckMXR Phase 90
Match58
Flexibility30
Portability92
Ease of Maintenance78
Tonal Neutrality32
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Maintenance & Supplies
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