I have a NAD C372 that I first replaced the metal jumpers with the standard Audioquest jumpers. The short black one for about 25 bucks. Vast improvement. I now use a .5m Audioqest Diamondback Cable for this. The diamondbacks were not much improvement over the standard Audioquest Jumpers but an improvement. I also have a NAD M3 using a .5m Audioquest King Cobra in place of the metal jumpers. So my answer to you is that you should definitely replace the metal jumpers.
Can upgraded jumpers improve sound?
Hi-I just purchased a NAD integrated amp with the standard jumpers in the back. I have seen mention that replacing the standard jumpers with after market ones can improve the sound. Anyone with experience? Are they called jumpers? Where can I find jumper/cables small enough? Thanks.