Hi,
There is a lot of Musical Fidelity used products available on Audiogon. Their used A3-24 DAC runs at about $750, and their CD Pre 24 with DAC is sold around $1100-1400, down from 3k when new. I had a chance to listen to the combo it a couple of years ago, and it sounded pretty nice, although a bit dry.
A3-24 DAC has pretty good reviews on the web, but I've never heard it.