The Sanyo DCA-1700 X is a 4-channel stereo decoder integrated amplifier, produced by Sanyo from 1970 to 1974 in Japan. This model is an evolution of the Sanyo DCA-1400, adding a 4-channel decoder feature. The amplifier comes in a silver finish and was originally priced around 200 US dollars or 800 Deutsche Marks. It offers rich audio decoding capabilities for a more immersive listening experience and is designed to complement a range of audio equipment, including tape decks, tuners, and speakers from the same manufacturer.