quadraphonic
Adjective
Meaning
of or relating to quadraphony
Source: WordNetSynonyms
Examples
his quadraphonic sound system
An attempt to provide for the reproduction of the reverberation was tried in the 1970s through quadraphonic sound but, again, the technology at that time was insufficient for the task.
At around the same time Virgin released an SACD version containing both the original stereo album and the 1975 quadraphonic mix by Phil Newell.
Some cartridges had frequency response above 30 kHz for use with CD-4 quadraphonic 4 channel sound.
Stereo sound was introduced in the early 1980s, and quadraphonic sound came in 1989.
Technics (Matsuhita Electric) marketed a line of strain-gauge (labeled "semiconductor") cartridges especially intended for Compatible Discrete 4 quadraphonic records, requiring such high frequency response.