Before DAT, Sony were recording digital audio to Betamax and Umatic tapes. The PCM-1601 from the late 70s was an industry standard for a while, and some of the

Before DAT, Sony were recording digital audio to Betamax and Umatic tapes. The PCM-1601 from the late 70s was an industry standard for a while, and some of the follow-on products were widely used for both CD and vinyl mastering.