Does the"quality" of jumpers affect the sound?

If you don't believe that splicing a four-inch piece of inferior wire into your primary speaker cable run will effect the sound, then no, jumpers made from the same cable won't make a sonic difference. Use the brass bars. Whether using expensive jumpers make a big improvement, I can't say. I will say that inferior connections can certainly degrade the sound.

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

Read my Audiophile Law regarding jumpers:

http://www.dagogo.com/DussunV8i-jumpers.html

I replaced my single wire speaker cable with biwire one because using jumpers along with the single wire cable didn't give satisfaction. Every jumper I used sounded different. So I decided to go for the Cardas Golden Reference biwire. It's not a real biwire cable though, but internally biwired, but what the hell...

Chris

Would a "better" jumper cable equate to better sound?
Greh

Possibly. It depends on the resolving powers of your equipment, and how carefully you listen. This question is very similar to the power cord question. If the electric company runs power in cables hundreds of miles, how can a 5 foot cord affect the sound? I and many others believe it does. However, YMMV, so only you can determine if it does for you.
FWIW, I heard a nice improvement when I changed my stock jumpers out for AQ Kilimanjaro jumpers.

John