Repeat after me, I will not allow pre-out/main-in to ruin the sound of my system!. Most receivers with pre-out/main-in use metal pins to complete the circuit. Replacing them with the AudioQuest Preamp Jumpers can, and will reduce distortion across this bridge, giving you the clean and clear sound you want.
The Audioquest Preamp Jumpers have solid PSC+ conductors in Polyethylene Air-Tubes. Replaces factory fitted "U" jumpers on integrated amps and receivers.