This is a vintage 1986 Boss DM-3 delay electric guitar effects pedal. This particular example, serial number 652300, is in very nice original condition. The DM-3 is Boss’ last analog delay pedal, and is nearly identical to it’s predecessor, the DM-2. Aside from a noise-reduction circuit, an additional filter, and a direct out, the DM-3 is in every way, just as desirable as it’s earlier versions. The DM-3 features a 20ms – 300ms delay time. This example works perfectly and sounds exceptional.