Wah effect with switchless system. Hybrid of Optical Switching and Pot Based wah. Switchless design. Simply step on to engage wah mode and step off to go bypass. Audio 100K slide pot for traditional wah tone, travel and Q. "True-Tone" Bypass buffer circuit ensures pure guitar tone and maintains signal level in bypass and wah mode. Cold-rolled steel housing, quick clip battery door and LED indication. Color: Black.