Launch of The Nakamichi NR-200 Noise Reduction Processor
The Nakamichi NR-200 incorporated the revolutionary Dolby-C and Dolby-B noise reduction systems, and was an external processing unit designed to be used in tandem with tape recorders to reduce noise and improve playback. This noise reduction technology was so popular and widely-adopted that in later years, it became the de-facto standard of all high performance cassette decks.