This Realistic TM-152 AM Stereo tuner is a compact and convenient way to enjoy C-QUAM AM Stereo signals through your existing hi-fi setup. The TM-152 measures only 9.25 inches x 6 inches x 2.75 inches and has classic styling with a metallic silver plastic faceplate, imitation walnut veneer cabinet, a lighted analog tuning dial, and a five-step LED signal strength meter. It connects to any receiver or integrated amplifier via standard left/right RCA outputs. I am unfamiliar with C-QUAM, but I connected a plastic insulated radio antenna to the back, and was able to find four or five stations in varying strengths. The unit is iin excellent cosmetic condition with no serious visible defects or signs of overuse. One of the rubber feet is missing underneath, but the remaining ones are cracking and crumbling, so i would recommend just removing them entirely and replacing them with simple stick-on rubber feet.