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The Doctor Q from Electro-Harmonix is a compact envelope filter pedal that generates percussive filter sweeps and dynamic picking responses that produce Wah-like tones. The Doctor Q pedal features a simple one-knob range control, true bypass, and switch-selectable bass boost. The unit runs on the included 9V battery, or an optional 9.6DC-200BI power supply.
In the Box
Electro-Harmonix Doctor Q Envelope Filter Pedal
Limited 1-Year Warranty
Table of Contents
Controls and Indicators
1 x Knob: Range
1 x Switch: Bass
1 x Footswitch: Bypass
1 x LED: Status
1/4" phone jack, input
1/4" phone jack, output
DC Power jack, 9 VDC power input
Input: 47 kΩ
Output: 47 kΩ
Battery eliminator: 100 mA
2.75 x 4.50 x 2.10" (7.0 x 11.4 x 5.3 cm)
Electro-Harmonix Doctor Q Envelope Filter Pedal Review