The Boss DM-3 was the last of its kind: the last analog delay pedal produced by boss, manufactured in the mid '80s. Sporting circuitry similar to the DM-2's, the DM-3 has an additional filter as well as high-speed noise reduction built in and stereo output ability. The controls on the DM-3 are also particularly unique, as they were only featured on this pedal and the Boss CE-2B.