Selling my DR-6Ms. These are in excellent condition, with no discernable issues. These weigh 350g and the build quality is exceptional for an on-ear headphone (the clamping force is a bit high though). The DR-6M was first produced in the late 1970s and production ended in 1980. They don't really have a "vintage" sound to them, and aside from some rolloff in the extreme lower and upper frequencies these sound and perform more like a modern headphone than anything else. With a 1/4 to 1/8 adapter they make for a great sounding portable headphone as they fold up, have good isolation, and aren't too difficult to drive. Asking price includes Paypal service fees and USPS Priority Mail shipping.