Very brief (<1 hr) listening impressions of the Luxman/HD800/DP-1: Very nice sounding...best ss I've heard with the HD800, although it's transparency is lacking slightly behind the Woo and way behind the ZDSE. The tonality is excellent-even better than the Woo, although they are both very good in that regard. They both have a little more 'meat on the bone' than the ZDSE, which seems to work better with some genres but not others. Bass is pretty good, similar to the Woo in that it's rounded a bit, but slightly better impact. ZDSE (with right tube) trounces them both in this regard.Treble is excellent-better than both the tube amps-either that or it's just rolling off the oft piercing highs of the Senns.
I wouldn't really call it warm or dark...but more kinda lacking some transparency if that makes sense. Guess it's the 'color' people refer to with this amp. I feel the Woo is a little more neutral-it can still be sharp in the highs-the Luxman...never does, yet.
Bah...more listening to do...strings and bass guitar on this thing are outstanding. Soundstaging still isn't on the level of the ZDSE, but I kind of expected that. Dynamics are good, better than the Woo (partly due to lower noise floor), but still not up to ZDSE levels. I'd say it's on par with the Bryson for dynamics, but not transparency...but much better tonality and about the same detail...more to come.
-Daniel