Everything works perfectly and owned since I was young. The Boss DS-1 Distortion, produced in Japan (MIJ) from 1978 to the mid-1980s, is a highly collectible, vintage pedal known for its "black label," silver screw, and warm, "long dash" tone. These early models often feature the Toshiba TA7136AP chip, offering a smoother, more overdrive-like distortion compared to later Taiwan-made models. Message me if you have any questions, ~JC