Electro-Harmonix Doctor Q Envelope Filter 1977
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The Electro-Harmonix Doctor Q Envelope Filter is a classic vintage pedal for authentic ’70s funk sounds. Originally introduced in 1976, the Doctor Q works equally well with guitar and bass, delivering its unmistakable, quacky envelope-filter character.
A convenient selector switch allows you to choose between guitar and bass voicings. Operation is refreshingly simple: a single Sweep Range control lets you adjust the intensity and tonal character of the filter.
A straightforward vintage effects pedal with unmistakable retro character — ideal for classic funk, soul, and psychedelic sounds.
- Potentiometer date code: 1977
- Made in the USA
Condition: Used / Good
Before resale, all used pedals are:
✓ Carefully inspected and tested
✓ Thoroughly cleaned
| Listed | a month ago |
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| Condition | Good (Used) Good condition items function properly but may exhibit some wear and tear.Learn more |
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