I'd really love to get an old CD player from the early 1980s. Something with an R2R DAC in it and only RCA outs. Not sure what models I should be looking at. Last year I bought a Sony CDP-690 with "dual 16-bit DACs" at Goodwill for $7.30. Needed a new belt, and it was up and running. Researching that model, I found out that I got the older model which has 2 multibit DACs, once for each channel. Newer models had one delta-sigma DAC. But for nostalgia's sake, I would like to find something older. Looking for recommendations on well built models that won't require expensive service to get up and running.