UPDATE: still loving the Bifrost...
However, Dan (drubin) brought something to my attention I thought it was very much worth sharing.
I was reading his post regarding BitPerfect, which I then loaded and found it to be much better at playback than just iTunes
Dan also advised that I might find that Audirvana might provide even better performance.
I looked into it and found that ...
Audirvana Plus 1.4, completely bypasses CoreAudio, even its low-level layer, and thus reenables the buried Integer Mode, in addition to offer even increased sound quality
VERDICT: A-M-A-Z-I-N-G!!! - it cleaned up everything across the board
It provides a much more dynamic presentation - any percussive/picking sounds are so much crisper than before.
Strings have lost a little bit of their edge and as a result sound a little smoother.
Instrument position within the image has also improved slightly. One track I have has two sax players doing battle at the same time - at times their focus was a little blurry in that they appeared to move slightly - NOT ANY MORE!
And that's just the 16/44 tracks - the 24/96 and 24/192 tracks I have sound so much more life-like and extremely detailed.
This DAC combined with Audirvana provides a very compelling musical presentation.
Just for "fun" I went to a local store today to audition the Mytek 192 DSD dac, just to se how it compares - and even though it sounds very good - I must say the Schiit Bifrost has nothing to be ashamed of - it's definitely right up there with Chord QuteHD, and Mytek 192 DSD.
Definitely no regrets with this purchase :-)
Special thanks to Dan for the pointer