The Yamaha RX-500U Natural Sound Stereo Receiver is a fully tested and working unit that offers a great listening experience. With features like CD input, FM/AM support, bass extension, and surround sound formats in stereo, this receiver provides clear and immersive audio. It also includes various audio outputs such as RCA, headphone jack, and raw cable speaker jacks, along with inputs for AUX, phono/turntable, stereo L/R RCA, and two-channel RCA. With a dynamic power output of 100 watts and a frequency response of 20Hz to 20kHz, this Yamaha receiver delivers high-quality sound for your home audio setup.