The first thing I heard through the Usher Audio SD-500 loudspeaker was the sound of Tony Dungy’s voice on Sunday Night Football. Watching television is a great method of speaker break-in because, for me, it’s the furthest thing from critical listening fare. Still, accompanying Dungy’s comforting drawl I couldn’t help noticing a realistic ambient din from the sparsely populated stadium. The feeling of air and space was immediate. Listening to the sound of an empty stadium, a sign of the times, and a neat first impression, but could the SD-500 impress with music as well? And who is Usher Audio anyway?