I also remember when JCP had a product line of HiFi stereo equipment. They went under the name Modular Componet Systems, or MCS. It was actually some pretty nice stuff built by Technics. I have a really fancy direct drive turntable from the early eighties with the JC Penny logo on it, and it is as good as any of the high-end ones from the big brands at the time.
I remember walking through JCP stores back in the eighties and seeing an entire line of home products, for HiFi and other electronics to all sorts of white goods. Their stores were as equipped as Sears....In fact, they were even dabbling in the TOOL business too!