upgrade your *preamp* if ya wanna improve the sound of digital software. i did so, & suddenly, my cheapie $500-retail nad 515 cd-changer is sonically comparable w/the highly-acclaimed $3k retail resolution-audio players. no meaningful differences, when run thru a melos music-director preamp. i was all-set to upgrade my cd-player after upgrading my preamp, but now, it's not worth it.
so, get a killer preamp & upgrade *all* yer system's sources, making redbook cd's paletable, while waiting-out the *suits*, as psjulian mentions. then, when ya *do* upgrade yer digital hardware, yule be able to plug it in to a top-notch preamp.
one person's opinion, doug s.