My understanding of electronics is very basic, but Ken seems adamant that CMOS circuitry cant generate enough current for audio - the design actually impedes current generation to save power. He claiims - and I dont want to get dragged into this - that 24-bit DACs often sound worse to his golden ears than older 16-bit designs. Granted, Ken is an aging holdout from the analog era, but he has spearheaded the design teams behind some very sweet gear in the years since Marantz abandoned the vacuum tube. No shortage of Head-Fiers who swear that the headphone stage in older Marantz receivers is on par with the best dedicated headamps out there - I cant comment on that personally, just putting it out there. I've seen some of the really old boards out of mainframe computers, and they were seriously chunky pieces of silicon running up huge power bills, but what's good for computing and the environment may not be ideal for audio - hopefully there is a middle ground.
Happy to hear from those with a better technical understanding than myself, If its back to point-to-pont wiring, there's always Bottlehead.