Hi
I use siltech since 10 years and I use all sorts of siltech spx20 ruby compass lake snow lake
Actually I have empress double crown emperor double crown and sector ruby double crown with octopus double crown electric
In my system I have viola legacy and viola preamp solo mono
Drive cec tl0 and wadia 921 931. with martin logan summit x and hrs
Every changing of model of siltech is very important for upgrade your system but when you try the double crown is the changing is magical the sound became incredible in compare with other cable like kimber mit or cardas
Excuse for my bad english I live in france