I used the short (about 3 inch) AQ jumpers on both of my NAD int-amps and found them a nice improvement over the metal stock jumpers. I moved up to a very short pair of AQ Diamondbacks interconnects on one and King Cobras on the other to use as jumpers. Both were a worthwhile improvement in my opinion.
I am very much satisfied with the results I hear, which is more detail and realism.
The lengths are .5m