Transport for Cambridge DacMagic

Bob- Probably not what you're looking for, but I feed one (via Optocoupler II Glass Toslink- not USB) with an iMac running AIFF files, and it's really great. I've never used it with a transport, so I can't really address that side.

Please post if you ever use your DACMagic with an Airport Express.

The CA 840c originally would not lock on to the jitter prone output from the AE, though they claim a software 'fix', which should also be on all new production.

A question of budget, of course, but the DACMagic deserves to reach fairly high (imo). If you want to go as far as US1k but not cross that line, a used CEC L2-X (belt driven design) might be tempting. I recall this machine as one of the quietest drives a couple of years ago. Also, you might want to look at cdps with the illustrous Philips CD-Pro2 drive on board.