The Yamaha K-720 is a cassette deck manufactured by Yamaha Corporation. It was released in the 1980s. The deck features a dual-capstan drive system for improved tape handling and playback quality. It also has Dolby B and C noise reduction systems to enhance audio playback. The K-720 offers various recording and playback modes, including auto-reverse. It has inputs for microphone and line-in sources, as well as outputs for headphones and a separate amplifier. The deck includes VU meters for visual monitoring of audio levels. Overall, it is a cassette deck designed for high-quality audio reproduction.