This sounds awesome. The D&S II runs on a pair of op-amps with germanium clipping diodes, so it sounds similar to the classic 808, but with more low end heft and gain range. It's perfect for punchy, warm blues leads or choppy rhythm parts. This is the 90s era model with the handy LED and a 9v power input.

Model: Maxon D&S II Distortion & Sustainer
Made: Japan, 1996
Serial: 96231
Type: overdrive
Power Input: standard 9v DC centre-negative supply or 9v battery (not included)
Accessories: none

Condition notes: used, no major marks. Tested and fully functional.
Overall: very good condition (8/10)