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Electro-Harmonix Nano Doctor Q Envelope Filter


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 The Electro-Harmonix Nano Doctor Q. The classic 1970's funk box now available in a pocket sized case. Dynamic picking response produces super funky wah like tones. The Doctor Q is an envelope filter that specializes in generating percussive punchy filter sweeps for a rhythmic groove.

Quick Specs

  • True bypass
  • Simple one-knob range control
  • Switch-selectable bass boost
  • Responds to your personal picking style
  • Tough and compact die-cast chassis
  • 9-volt battery included
  • Jack for optional US96DC-200BI power supply (Not included)

Instructions (PDF)