Quirky Shinola, the scrappy Detroit, MI-based manufacturer of an eclectic collection of disconnected product lines, including watches, bicycles, leather goods, jewelry and, now, audio, has introduced a line of headphones, including over-ear, on-ear, and in-ear models. The company, which is owned by Bedrock Manufacturing Company, LLC, is as much an experiment in bringing manufacturing back to bankrupt Detroit, as it is a power brand.