The Kenwood KR-4200 is a stereo receiver that was popular in the 1970s, designed for home audio systems. It features a sleek design with a brushed aluminum front panel and simple, intuitive controls, including a tuning knob and rotary volume control. The receiver has an output power rating of approximately 20 watts per channel into 8 ohms, making it suitable for driving standard bookshelf speakers. With a frequency response range typical of its era, it typically operates from 20 Hz to 20 kHz. The KR-4200 is equipped with several inputs for various audio sources such as phono, tape, and auxiliary, and includes a built-in FM/AM tuner for radio playback. Signal-to-noise ratio and total harmonic distortion figures are generally acceptable for its class, ensuring quality audio playback.