That was the one I had. Excellent machine. It had, however, the original implementation of Dolby C which consisted of two Dolby B procssors in series, each with different time constants. It worked very well indeed, but was incompatible with the later single-chip implementation of Dolby C. This incompatibility, however, must be taken in context. Dolby C was considerably more critical of alignment than Dolby B, which is one reason why Musicassettes never went over to Dollby C, it just wasn't possible to maintain alignment and duplicate at 32 or 64 time speed. Tapes recorded on the 482Z played back properly, and also on the three-head Aiwa machine that used the same Dolby C system, but on other machines there was a noticeable Dolby error when listening critically.
The Dolby B processing on the other hand, was fully compatible with all other Dolby B.
The machine had the great benefit that it can be lined-up for every choice of tape, but doesn't have auto alignment so it has to be done manually, which requires a fair amount of test equipment. Still, it's pretty stable,as are all Nakamichis, so if lined up once, it should keep it's alignment for a fair while.
Overall, I was very happy with mine, only sold it when I started being able to record on PC and burn CDs.