This past weekend, I just tried some 96 kHz / 24 bit downloads from HD Tracks.com and I was blown away. The detail, depth and lack of harshness is unbelievable. You can easily hear the limitations of CDs when you switch back from the high res files. You also get a sense of unlimited dynamic range with an almost analog sound. WOW!
This is what I have always enjoyed about owning Magnepan loudspeakers. Everytime you improve the front end, whether it be the amp, preamp, DAC or, in this case, digital quality, you can easily hear the improvements through the Magnepans. The 1.7s just keep sounding better and better.
I use a Netgear 9150 linked to the Wyred 4 Sound DAC1 via Xindak cable. The clarity of the high res files will spoil you for anything else. I am going broke downloading new albums!