http://www.ehx.com Visit EHX.com for user videos, our blog, community fourms, and lots more! For more Doctor Q product info, see: http://www.ehx.com/products/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.* 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* Optional US96DC-200BI power supply available