My Heed Obelisk PRE/PS/PX stereo amp drove HE-6 really really well, but guess it´s not the answer your are looking for.
I got a mail from "Blue Coast Music" with offers on some nice relaxing jazz music (in DSD I presume ??), but not sure which format to buy for the Vega. Can it play both DFF 2.8Mhz and DSF 2.8Mhz, can´t find any info in manual. So I ask here first before I spam Auralic.
From the Interweb "DSF and DFF are 'kinds' of audio files that are delivered as downloads or read by software for playback. DSF has the ability to hold metadata and DFF doesn't, however, some players only read DFF files."
http://cavamenziesnickphillips.downloadsnow.net/moment-to-moment
Auralic Vega supports DSD64 and DSD128, that's the sampling rate format, the DSF/DFF files are just containers.
So yes, it will play it no problem.