Well. May I ask what DAC and AMP do you use to pair with HD800 curiously?

I am using just an Ipod Touch, pair it wit my newly purchase Port Tube, goes a little hot when its heated up, but who cares? The little fellow can push almost any headphones with 300ohms impedence effortlessly.
You you like Jazz, or soundtracks, this combo, with the HD800 is one of the best I have own. The Ultrasone 10 Ltd edition is another, just as good, but much cleaner.
Both deliver layering effect, holograhic feel, fluid sound.

http://govibeamp.com/
Have no chance to listen to ALO Continental tube amp as well, I suppose its similar.

think you got your pros and cons mixed up