@drlou77 I wish I could tell you that there is no difference but it is and a lot, probably it was one of the biggest improvements with Innuos but before ordering one I will suggest you to test it in your system, fortunately there are great Innuos dealers that can work that with you.
When I installed mine, I still was talking with the dealer 10 mins after he connected it, music was in the background and I could tell the improvement.
I think maybe as you go up in the streamers ladder the difference is more subtle but with the Zenith MK3 it made a lot of difference in my system
One more, also a good cable made a big difference
My 2 cents
Thanks and good luck