I have not tried the Quick Silver yet but can confirm the original Walker SST was excellent and the new Extreme SST is even better. For me the Walker treatment was an immediate improvement in sound and it got better as it broke in.
The first place I tested the new Extreme SST was on the connector pins of my balanced interconnects leading FROM my open reel tape machine. Later that night I did the preamp end of that same cable and then the IEC end of the AC power cable.
My results were pretty much like Rushtons, improved sound and dynamics with better focus.
If you have Caig ProGold use it, assuming you have not gotten around to buying Silver treatment. Pro Gold is an improvement over doing nothing and it is very reasonably priced.
The first place I tested the new Extreme SST was on the connector pins of my balanced interconnects leading FROM my open reel tape machine. Later that night I did the preamp end of that same cable and then the IEC end of the AC power cable.
My results were pretty much like Rushtons, improved sound and dynamics with better focus.
If you have Caig ProGold use it, assuming you have not gotten around to buying Silver treatment. Pro Gold is an improvement over doing nothing and it is very reasonably priced.