hi scott, i know ya already made a purchase, but i think ya need to spend another $350... ;~)
i own an alchemist nexus, & have compared it to the resolution audio cd50 - it's like tryin' to split hairs to find differences between 'em... *but*, my 6-yr-old $500-retail nad cd-changer hooked up to a modded art di/o dac ($350 brand-new, w/mods, or cheaper, if you can diy), absolutely smokes both of 'em. the alchemist is hooked up to an auxilliary system in the computer-room; the nad & art di/o reside in the main rig...
doug s.