I posted the following on a thread about the DX100, but it is relevant here also:
I can't report on the new firmware, but I can share that I tried the Tralucent T-1 amp as per lee730's recommendation. And it is quite an amazing amp for the price, and a definite upgrade over the amp in the DX100. However, I also happened to be trying a used Continental V2 that I got on here for a good price. And yes the $529 amp is even better than the $229 T1. No surprise there given the much lower price of the T1, but the surprise is how close the T1 came to the ALO tube amp. Clarity and the ability to sort out complex music was the same on both amps. The Continental just has a certain fullness and body to the sound that the T1 can't quite match, although in most respects they are incredibly close, and the T1 actually has a very nice tone itself, just not as full and dense as the tube amp. If the Continental is out of your budget, then I would certainly recommened giving the T1 a try. Also I was using them both with the HD650s which probably is not an ideal match for the T1. With an easier to drive headphone, the differences might be even less than what I heard.