I have replaced my Denali 6000/S V2 and Sigma V2 XC with an Everest-X and Sigma-X XC. The distributor drives a Luxman M-10X amp, Esoteric Grandioso C1X solo pre, Esoteric K-01XD SACD player, and an Aurender N20 server via (1) Alpha-X and (3) Alpha V2 NR PCs. The new distributor/PC takes a long time to break in (at least 200 hours). What I hear: More dynamic, dense, yet refined sound. Bass has more gravitas. Notes on some recordings have noticeably more sustain. Improved, more realistic instrument tone (especially classical music). Pricey upgrade but well worth it. Sounds like I would expect an amplifier plus a front end upgrade to sound.