What is it you expect to hear from hifi gear that you have not yet?

OP -- me too. I'm hoping to hear my bluesound vs. something better with all other variables stable to see what the fuss is all about (or not).

Whether your DAC support 24 bit 48KHz, 96KHz, 192KHz, etc. really doesn't matter.  Recording studios only use 48KHz so anything above that is fake.  It is like playing back a 720P video signal on an 4K TV.  It will try and upscale the signal but it is adding in things that were not in the original signal (hardly high fidelity).  You can't add detail that was not there originally.  Sure you can have a computer (a lot more computing than any DAC does) try and guess what the missing parts are by analyzing the surrounding information but it is still a guess and can be wrong.  Music is a complex waveform that can and does frequently change in unexpected ways thus delighting the brain with interpreting what it is hearing.

@barjohn,

You might find this an interesting read:

Thinking Outside the Box -- Listening Outside the Room or the Bouncing Sound | News & Views | Ohm Speakers | Custom Audiophile Speakers for Music & Home Theater

Magic!