Has anyone heard this beastie? Do you need to buy the Spectral pre and their interconnects as well? And does it have the grunt necessary for authentic AC/DC despite "only" being 100w? From reviews it sounds like the dog's, but is it better than say a Pass Labs X350 or, Nagra MPA, or Hovland Radia? These are my current shortlist, though I've only heard the Pass Labs... Roll on flat sale:D