A PCM adaptor is a device that encodes digital audio as video for recording on a videocassette recorder. The adapter also has the ability to decode a video signal back to digital audio for playback. This digital audio system was used for mastering early compact discs.

Technics is a Japanese audio brand established by Matsushita Electric in 1965. Since 1965, Matsushita has produced a variety of HiFi and other audio products under the brand name, such as turntables, amplifiers, radio receivers, tape recorders, CD players, loudspeakers, and digital pianos. Technics products were available for sale in various countries. The brand was originally conceived as a line of high-end audio equipment to compete against brands such as Nakamichi.