jl1ny,
Funny how small changes can cause some sweet sound, just a little money and time to find a better solution. If you want to upgrade that USB cable, there are some very good "reasonably" priced cables that will improve your sound even further.
Look at eBay for Supra USB cables, just make sure that you are buying from "Zendada" who is an official distributor.....Wireworld USB cables are also excellent. Both options can be had for under $100 depending on the length you require.