I just wanted to post this for the community since I found the EVS in a discussion for tweaks and wanted to try it out and hopefully this summary helps. Thanks
I was hoping for audible improvements (yes skeptical), but that was not the case. It was dramatic. I can hear better dimensionality, and a more transparent presentation. I thought that may just be me wanting to hear a difference, but went immediately to my second system (Akitika w/DQ 10 speakers) and then third (Primaluna w/Wharfedale speakers) stereo systems to make comparisons. The change made the 2nd & 3rd system sound flat by comparison. I liked it so much that I bought two more for my 4th & 5th system. Rick, thank you for a reasonably priced tweak and will recommend it to audio enthusiast friends & family.