Received my iDSD from MusicDirect today. Listening to a pair of RE-400 IEMs with the iDSD. Really nice DAC. Plenty of details and quite engaging. Amp section provides sufficient soundstage depth and width. I'm not going to make too many statements after 5 minutes of listening. I hope to get it hooked up to my Bottlehead Crack amp as soon as I get some headphones for it.
The bad news...
My listening so far is using my iPhone 4S as a source. When I hooked up the iDSD to my Macbook Pro (late 2013 model) it is recognized by my computer as well as by the Amarra software. However, there is a communication error somewhere in the link because while recognized by computer the songs will not play, literally stuck at 0 seconds. This is the same whether I try playback using iTunes or even YouTube. All stopped, no playing. Computer is fine, it's not frozen.
I also tried using a USB2.0 hub into my USB3.0 ports of my MacBook. Same situation.
I knew of these problems going in but I thought going into the USB2.0 hub would be a fix so I talked myself into getting the iDSD over the iDAC. I can live with this problem short-term but how far away is the fix? If far away I may return and just get the iDAC.