One of the most iconic and earliest stompbox overdrive pedal.
The Legend, the "OG" OD Pedal - the first compact pedal BOSS made in 1977.
Using assymetrical clipping, the classic OD-1 gives you a bit of an edge to the overdrive sound.
The first OD-1 used a dual op-amp chip, identified by 14 pins.
This later one uses a JRC4559 8 pin op amp.
Overall, this Used pedal is in VG condition can be powered by an ACA Adapter (not included) or by a 9 volt battery.