Back in the day (1981 or so) the 3-letter nomenclature was introduced for recording, mixing and mastering. It's known as the SPARS code: A is for analogue, D for digital.
Thus an ADA record was recorded on analogue tape, mixed digitally, and mastered with analogue. By the mid 1980's just about everything was recorded digitally, so much good music is unrecoverable.
Thus an ADA record was recorded on analogue tape, mixed digitally, and mastered with analogue. By the mid 1980's just about everything was recorded digitally, so much good music is unrecoverable.