The Pioneer SX-838 is a vintage stereo receiver produced in the early 1970s. It features a solid state amplifier, with power output rated at 50 watts per channel into 8Ω (stereo). The receiver is equipped with AM/FM radio, has inputs for phonograph (turntable), tape (both playback and recording), and auxiliary devices. It also includes controls for bass, treble, balance, and a loudness function. The SX-838 is well-regarded for its build quality, with a metal faceplate and wooden case, characteristic of high-quality audio equipment from that era.