•AU20 is a select series of the "sonic bests" from the Rykodisc and Hannibal catalogues. The AU20 trademark distinguishes audiophile editions of 20-bit digital masters, "noise shaped" from 20-bit to 16-bit and replicated on 24kt gold CD's.
This is easily the best sounding version of this excellent album I've ever heard. Gold discs are quite nice sounding. However, good luck finding one...