[mastercheif]

FPGAs are starting to see extensive use in the high end audio market for implementing custom filtering, DSP, and discrete DAC mapping algorithms.

Here's an interview with Rob Watts, a DAC designer who's getting the best measurements in the industry right now with his Chord DAC's (specifically Chord DAVE) http://www.the-ear.net/how-to/rob-watts-chord-mojo-tech