After going though the last few years upgrading all my cables (power, interconnect, speaker) and power I finally broke down and bought two pair of speaker jumpers. My speakers, Aerial Acoustic 7T, have nice, solid brass jumpers, and, to be honest, I really couldn't imagine a speaker jumper making much difference.
Well, once again, the real world makes a mockery of my preconceived ideas. As soon as I turned the amps on after replacing the jumpers I knew it was different. I had paused an Elgar Cello Concerto while changing, and upon resumption it appeared to be a bit louder. As I listened to it I noticed the cello would seem to move closer to the left speaker, and then come back a tad to the right. It was if the player would lean over, and then go back upright.
As they have burnt in, the soundstage is even better defined, and nuances such as note decay are longer. The over all effect is scary in its new found detail and clarity. How can this short piece of wire, which is about 4" longer than the jumpers, make this big of a difference? I guess based on my past experience with other cables I should have expected this, but I am still amazed at the improvement. I have a new pair of speakers, and they are already broke in.
Jumpers: Shunyata VTX-11