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