3) - also known as MU-1000 Mute
Box, same as MU-1500 the Funky-Filter, a copy
of a Mutron III. The pedal was an "envelope follower" or auto-wah. The schematic
was exactly the
same as a MuTron III, they were actualyl licensed from MuTron. 2 knobs for
"Peak" and "Volume",
4 switches "Drive" (up, down), "Range" (high, low), Filter (Hp,EP,LP), Power (On, Off).
Came in steel-colored case.