Tom's advice is good on all counts. If you are only replacing the jumpers and not running the signal through an external processor or hooking up to a separate external amp, I would seriously consider staying with the jumper, if it's that short "u" shaped piece of metal that I have in my old NAD receiver, as I would think the shorter the better for the connection, no matter how good the interconnect (Tom's advice makes it an even shorter path).
IC.to replace Pre-Out/Main-In jumper
I would like to know more about using IC. to replace the jumper of NADC370 Intg.amps.is it really going to improve the sound?in what way? secondly,the"better" IC.where should it be connected(cdplayer to amps ? or Pre-Out to Main-In?) I really need your help on this and thankyou Simon