This is a DM-1 original, late model. I believe it's rare to find one in such good condition. Having owned three each of the early and late models, I kept the one that was most usable as a delay. The late model has a longer delay time, making it easier to use in modern music, and for some reason, this particular unit has a texture that's a cross between the early and late models, with a sound that blends in smoothly without losing its definition. The delay sound changes depending on the quality of the power supply, which is unique to analog delays, so I recommend experimenting with various power supplies. I'm reluctantly selling it to raise funds... Body only, no price reduction is possible.