
So far I've been listening to various formats of music ,comparing ripped CD's in wav format, the original CD's, 24bit/96khz and 24 bit/192khz files. With redbook CD's ripped in .wav format the sound through the Hiface is excellent and is an improvement on the regular transport.In the case of Hi-res files I don't think I could differentiate between 96khz and 192khz and I think it depends on what format it was in previously and how it was transferred. I've been using a site called 24bit96khz.org where uploads have been done from vinyl and I've compared a couple to the original CD's and I found one upload was lifeless and the other smooth and an improvement on the CD with lots of detail and subtlety. Material originally on SACD was excellent as was material from Blu-ray at 192khz (Neil Young Archive) and Studio Masters from Linn and Chesky. This site has around 900 titles for download, legal or not I don't know.
Once this mine is exhausted there is Wolfgang's Vault for relatively cheap downloads and HDTracks.com at higher cost.
Overall the Hiface has been a great addition to my set-up and I'd be interested in hearing other's experiences with it especially sources of hi-resmusic.