Thanks! I've got those cans and have been waiting to hear how they synergise (or not) with the DX100. Good to know it's a promising match if I can ever afford the DX100. Provided the DX100 gets a couple of tweaks/mods which are a deal breaker at the moment Some official news about Jelly Bean or ICS would be good to hear.
Both the Pro 900 and the Pro 2900 are ruthlessly unforgiving of poor sources and noisy amplifiers and both truly shine with the DX100. The Pro 2900 with its forward mids are probably the hardest to please, but listening to Fink's album "Distance and Time" on them, fed by the DX100 today was pure bliss. The guitars, the drums and Fink's almost melancholic voice all had their clear place in the soundstage, while at the same time sounding as a whole, coherent entity.
Which "deal breakers" are holding you back at the moment? The DX100 is by far the poorest tablet or internet device I have ever tried, but I have never heard (or even heard of) a better one-box music player.