Well, Frank has done it again! I always wonder how he could possibly improve on his products and then he does. I just got my T7 and 550EXR back from upgrade to "Ultimate". Hooked up to my 801s ASAP.
First impression was improved image; almost as though one could walk up and touch each player. Symphonies broad and deep; soloists located in space, and the right size.
The biggie was when I played some vocal work, both large choir and small group (sextet and duet). These were all perfomances in which I sang, and I'm pretty familiar with what I did and how these recordings sound. I was astonished at how much better I'm able to hear inner voicings and small details (including occasional small mistakes that I knew about, but was never before able to really hear on the recording).
Thanks again, Frank!