The Hitachi SR-2004 is a stereo receiver from the 1970s that offers a blend of functionality and audio performance. It features a power output of approximately 20 watts per channel into an 8-ohm load, making it suitable for small to medium-sized listening spaces. The SR-2004 is designed with a traditional layout, incorporating a tuner section for AM and FM radio, along with typically available input terminals for various audio sources including phono and auxiliary inputs. The receiver includes controls for balance, volume, treble, and bass adjustments, providing users with the ability to tailor their audio experience. An FM muting switch is often included to reduce noise during silent periods of radio playback. This model is equipped with a heat sink to help manage temperature during extended use, contributing to the reliability and longevity of the unit. Overall, the Hitachi SR-2004 combines solid construction with functional design, catering to enthusiasts of vintage audio equipment.