My main system uses a primaluna dialogue two preamp, primaluna dialogue 6 monoblock amps, and B & W 805 speakers connected with Nordost valhalla and odin cables. I swapped out the stock jumpers for Nordost reference jumpers. The improvement was immediately apparent, and it has continued to improve.
If you do not hear any improvement with the Fururtech jumpers then you might want to try something else. The change should not be subtle.

