Welcome to the forums and the DECWARE family!
I'll let someone else comment on the wait time, it's worth it. to put it in perspective. I received my Torii MKIV w/ 25th mods in The Philippines right before Covid hit. I flew back to the USA and the world changed. 16+ months later I finally got my amp shipped back after only experiencing the magic for 2 weeks! trust me the wait is worth it!
This is the development thread for the UFO25TH which all the other amps got the 25th mods based on Steve's advancements on the UFO line.
https://www.decware.com/cgi-bin/yabb22/YaBB.pl?num=1510887200The quick version is it radically increased the speed of everything. I didn't understand this until I got the amp. Music is fast! Most amps are not fast enough.
It also increased clarity detail while reducing grainyness. The end result is an amplifier that can reproduce music in a way that has a magic to it. It's fast, clear, detailed and full of rich harmonics, creating a holographic sound experience.
What are some of the other parts of your system?