It's not a feature that is troubling me. First, I ordered an XDA-2, which I thought sounded GREAT for $250 - but it died within two days. For "boatheelmusic" - you can see my video on this forum and on youtube showing what happened - all it produced was a loud static sound. Probably shouldn't go around calling BS on other people when you have absolutely no idea what you are talking about.
Because of everyone's praise, I decided to take the opportunity to upgrade to the DC-1. The DC-1 actually worked OK, but when using USB as the source, and while in Asynchronous mode it would produce a constant buzzing sound in one channel. The guy from Emotiva said it was a ground issue - and admitted it shouldn't do that. I tried to take a video of that as well, but the buzzing was quiet enough that my phone mic didn't pick it up. It was quiet enough that it normally wasn't noticeable while playing music, but you could hear it when there were quiet parts in songs.
Other than that, the DC-1 was a pretty good unit. In synchronous mode, or while using an optical input it worked quite well. However, I decided to return it because I wanted to use USB as my input, and I wanted to use asynchronous mode - and frankly, the fact that I got two bad units in a row did not instill much confidence in me that it would last.
That said, it did sound pretty good on the HE-400 headphones I had. On the HD800, there was quite a bit to be desired - at least in my experience. For the money, IF you get one that works right, the Emo units are hard to beat.