I use Shunyata Diamondback cords on all my source components and preamp. I use a Shunyata Coppperhead cord on my power amp. With the Shunyata cords, there is no background noise and the music seems to flow better. I also use Shunyata Guardian's for power supply filtering. A great bang for the buck and much better than cords costing double and triple the price (in my system).
Bob
Bob