Phase 4 Stereo

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Phase 4 Stereo was a recording process created by the U.K. Decca Records label in 1961.[1] The process was used on U.K. Decca recordings and also those of its American subsidiary London Records during the 1960s.

Phase 4 Stereo recordings were created with an innovative 10-channel, and later 20-channel, "recording console"[2] (actually a mixing console.) The concept of Phase 4 Stereo has no connection with Quadraphonic sound or "four channel stereo." But because there often are sounds out of phase, the records may also give pleasing results when played on Hafler circuit systems or other simulated four channel systems.

Approximately two hundred albums were released with the process, including popular music, "gimmick" records engineered to make the sound travel from speaker to speaker, records featuring percussion effects, and historical sound effect records. In 1964, a light classical Phase 4 "Concert Series" was produced.

In 1996 a CD, The Phase 4 Experience, was released with recordings from 1966 to 1979 (London 444 788-2 LPX/PY 871).

A space themed version An Astromusical Odyssey was arranged by John Keating which included songs from the late sixties to the early seventies. Selection can be heard on Youtube.

See also[edit]


  1. ^ Billboard. Nielsen Business Media, Inc. p. 2. ISSN 0006-2510. Retrieved 20 August 2015. 
  2. ^ "Endless Groove - London Phase 4 Stereo". Retrieved 20 August 2015. 

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