RadioShack is an enduring name in electronics retail. This is the place for every kind of wire or connector for today's very broad gamut of devices.
Audio, video, wireless phones, even a few toys for the kids--it's hard to find something the place doesn't have.
It may not have the broadest selection of component products, but RadioShack corners the market on supplies such as cables, blank discs, batteries, pro audio gear, adapters, speaker wire and far too many more bits and pieces to list here.
This South Pasadena location, one of many nationwide, is a fairly large space compared to other L.A.-area Radio Shacks. The sales staff knows their stuff and can help when equipment breaks down or causes confusion.