The Yamaha TX-400 is an FM stereo tuner that was produced in the late 1970s. It features a sleek, vintage design typical of the era, with a brushed aluminum front panel and analog tuning dial. The TX-400 is equipped with advanced tuning capabilities, including a digital frequency display and a stereo/mono switch for audio output flexibility. It supports both FM and AM frequencies, allowing users to access a wide range of radio stations. The tuner is known for its sensitivity and selectivity, which enhances its ability to pick up weak signals while minimizing interference. The power consumption is modest, making it an energy-efficient device for home audio systems. It also provides output options for connecting to amplifiers and receivers, facilitating seamless integration into existing audio setups. Overall, the Yamaha TX-400 is valued for its tuning performance and classic aesthetic, appealing to audio enthusiasts and collectors alike.