The Onkyo SX-70 is a stereo receiver designed for delivering high-quality audio performance for music and home theater systems. It features a robust construction with a classic design that appeals to both modern and traditional aesthetics. The unit is equipped with integrated amplification, multiple audio inputs, and varying output options, making it versatile for connecting to different audio sources. The receiver typically includes FM/AM radio capabilities and may support multiple speaker configurations. Common specifications include power output often ranging around 50 watts per channel at 8 ohms, with total harmonic distortion kept low for clean sound reproduction. The SX-70 may also feature adjustable tone controls, loudness settings, and headphone outputs for personal listening. Connectivity options often extend to various stereo inputs, making it suitable for CD players, turntables, and other audio components. The build quality emphasizes durability with metal casing and an intuitive control layout for ease of use.