Jumper cable replacement - pre out/power in 2160

I've replaced the steel jumpers on previous NAD integrated amplifiers and there was a worthwhile improvement.

Anyone tweaking their 2160 in this way? What are you using?

A little more info.

I found Audioquest jumpers on sale and since I used their Type 4 speaker cable I thought to try them.

Maybe I am imagining. It's a different sound - better? I think yes.

I am a music lover who is experimenting and learning. And always willing to try inexpensive but possibly meaningful tweaks. Like speaker placement. Or jumpers.