Looking at those Pics Paulo, I think there is a Silver shortage worldwide now!
I love the 4 wire SW22. I have it as a SE cable to compliment my balanced SW25 SW's. I love having them both. I travel with the SW22 SE and use the Bal SW25 at home. Good to see the 8 Wire is hitting the TOTL mark!
The Studio Six is only overtly "Tubey" with the right tubes. It is excellent with the HD800's. It also pairs well with the LCD-X and Alpha Prime. I am well into my review and I am impressed at its verstility. I did roll some 6SN7's and a variety of 5U4G variants. Like different frosting on a great cake.
BTW, the Phono Pre amp is fabulous too. The Dynavector is loving that amp.
It is a noticeable upgrade. It is not 2X better though. You will get more definition and extension plus the ability to handle native DSD. If you go for the upgrade, spring for the additional Femto clocks too. Might as well max it out!