Electro-Harmonix Doctor Q Envelope Filter
Checked by hand on 5 October 2026
4 versions · 46 for sale · 349 sales on record. Pick a version for a price: these versions do not trade in one band.
Pick your version
Same name, different money: prices are per version.
| Version | Typical used | For sale | From |
|---|---|---|---|
| Doctor Q Envelope Filter 1970s | Typical used €9014 sold, 6 months | 35 | €76 |
| Doctor Q Envelope Filter Reissue | 69 sold | 7 | €61 |
| Doctor Q | 10 sold | 1 | €159 |
| Doctor Q Envelope Filter Nano | 1 sold |
For sale right now
1 local pickup ad in Germany, on Kleinanzeigen. Showing 1 local pickup ad in Germany, on Kleinanzeigen. Local pickup near you, in Germany: 1 ad on Kleinanzeigen.
Show 1 listing over typical
Germany2 local pickup ads in Portugal, on OLX Portugal. Showing 2 local pickup ads in Portugal, on OLX Portugal. Local pickup near you, in Portugal: 2 ads on OLX Portugal.
OLX Portugal
Grouped by version, best-priced first within each. Each card says when we last confirmed its listing at the source.
Electro-Harmonix Doctor Q Envelope Filter 1970s
Typical used €90, the middle of 14 sales, last 6 months. Each card compares to its condition where eight sales carry it, to that figure otherwise.
United States
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