| 11. | Also advertised were quadraphonic versions of two other Zappa titles.
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| 12. | He achieved a diplophony which is triplophonic, even quadraphonic.
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| 13. | Big-band leader Sansui's quadraphonic system called QS Regular Matrix.
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| 14. | This quadraphonic format was first marketed in the United States in May 1972.
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| 15. | A Quadraphonic mix was available on the Quadraphonic 8-track cartridge format.
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| 16. | A Quadraphonic mix was available on the Quadraphonic 8-track cartridge format.
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| 17. | The album was prepped for a Quadraphonic format, however was left unreleased.
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| 18. | It contains alternate takes and is one of only a few quadraphonic releases.
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| 19. | In America it was the first commercial quadraphonic system.
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| 20. | Quadraphonic sound at concerts has been the mark of audio perfectionists like Pink Floyd.
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