A pair of used or new Kimber jumpers wouldn't break bank.Clean them and especially your RCA's with Carig detoxit and if really into getting best connection get the silver contact paste from Mapplesahde (cheaper than Walker).I read a Fremmer article where some guy used fine grit paper and polished everything he could and would have doine inside of his ou lets if he could,but Fremmer said (his words not mine) that thie rwas a MAJOR improvement when the RCA's and baldes on his power cord were olished off.Obviously this isn't even froting on the cake.You sources,amp[ and especially speakers are the cake,wirring the froting and isolation and this type of tweaking the jimmies or shaved chocolate on the cake.But its somtimes that last bit that just makes it "right".Lot's of snakeoil in this biz but to certain degreee wirring (I am more skeptical or cautious price wise than most),isolation products,powerr condtioning can make discenable differences.It's just wehn I see folks spend 25% of a $5K budget on wires when 5% would do and they could have gotten more power or better speakers does the "tweak thing" become inane and unbalanced.
Chazz
Chazz