The Maxon OD-880 Overdrive / Soft Distortion was originally released in 1976. This pedal was huge in Japan, being the favored overdrive pedal of Char, one of the country’s most popular guitarists, who—like the pedal—never really got noticed out of Japan. It was reissued a few times, notably in the mid-90’s as well as in the past couple of years.
It’s an interesting circuit from a historical perspective, being sort of a “transitional species” between the Distortion+ and the Boss OD-1 OverDrive: it added the input & output buffers and changed the Drive potentiometer to a flat op-amp boost instead of a gain modifier that also affected the bass tone, like in the Dist+. The Boss OD-1 is essentially an OD-880 with feedback clipping diodes instead of diode-to-ground clipping, though this diode arrangement turned out to be a very significant innovation and made way for the Tube Screamer a couple of years later.
Used - very good condition.