| 21. | Computers are not quadraphonic sound, some marketing phantasm that nobody needs or wants.
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| 22. | Quadraphonic audio formats were more expensive to produce than standard two-channel stereo.
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| 23. | It was released on Quadraphonic 8-track tape and CD-4 LP.
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| 24. | The album was reissued in 2015 with a quadraphonic sound mix and bonus tracks.
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| 25. | A Quadraphonic mix was available only on the Quadraphonic 8-track cartridge format.
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| 26. | A Quadraphonic mix was available only on the Quadraphonic 8-track cartridge format.
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| 27. | It was a pure exponential horn-loaded bi-amped quadraphonic sound system.
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| 28. | It is said it was the first commercial quadraphonic matrix system in the market.
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| 29. | Quadraphonic sound arrived roaring and expired quietly.
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| 30. | Then you have to invent a system of tablature that lets you write in quadraphonic,
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