For sale is a DOD FX25 Envelope Filter (Circa 1992) – The pedal is versatile and it ha a lot of variety in sounds. You can set it to act similar to an auto-wah to a wider short sweeping type of tone.
“The FX25 uses a bandpass filter circuit where the peak frequency is determined by the input signal level, for a touch-controlled wah or auto-wah effect.” – americaspedal.net
This is pedal is in good shape, it fuctions well and is solid. The stomp pedal sometimes sticks a bit, but still very functional. There are several marks and scuffs on the pedal, it is all cosmetic. (Please look at all of the pictures, all sides are shown.)