Joeybgood
500+ Head-Fier
I would first upgrade the power supply for the Regen (if you are using the stock PS presently). I think different USB cables may give you some different flavor, but not necessarily a cost effective improvement over what you have currently. From what I have read about the Yggy sound, you may prefer the W4S Recovery reclocker, which would probably be a cheaper net cost for the upgrade. You can sell off either the Regen or the Recovery after you make your selection, however both will benefit significantly from a power supply upgrade. Many of those USB cables can be returned after trial, so if you do not mind dealing with that type stuff, just research in advance which suppliers honor their commitments for the return policy.
Thanks for the info. I have all my gear plugged into PS Audio PerfectWave power bases . They clean up the 'dirty' AC nicely.