MXR1970s (cult status through the 90s-2000s)Octave FuzzFuzz$$Mid-Range($250–800)
MXR Blue Box
Guitarists wanting a genuine vintage octave-fuzz circuit for an aggressive, synthesizer-like low-octave growl.
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Strengths
- Combines a genuine sub-octave generator with fuzz in one circuit, giving a distinctive synth-bass-adjacent growl unlike a plain fuzz
- Became a real cult favorite specifically for its aggressive, synthesizer-like low-octave character
- A genuine vintage circuit with real historical use on notable recordings, giving it documented cultural cachet
Trade-offs
- Its combined octave-fuzz character is genuinely a specialist, occasional-use effect rather than an everyday pedal
- Analog octave-tracking can be unpredictable on complex chords, working best on simple single-note riffs
Full Specifications
| Specification | Value |
|---|---|
| Brand | MXR |
| Model | Blue Box |
| Era | 1970s (cult status through the 90s-2000s) |
| Typical Price Tier | Mid-Range ($250–800) |
| Effect Type | Octave Fuzz |
| Circuit | Analog |
| True Bypass | No |
| Power | 9V battery/adapter |
| Controls | 2 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.
Match Score Explorer
Weight what matters to your workflow. Every deck is re-scored live against your priorities, benchmarked against the MXR Blue Box.
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This deckMXR Blue Box
Match54
Flexibility45
Portability85
Ease of Maintenance70
Tonal Neutrality15
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Maintenance & Supplies
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