beo, UPOCC copper is cleaner, faster, more detailed and more dynamic than regular copper but doesn't have the "weight and body" of regular copper which may or may not be a good thing depending on your personal preferences. The warmth of regular copper is distortion and masks fine detail and makes the cable sound "slower" and less dynamic as well, but on the plus side it adds a fullness to the tonality of the system that some folks like. The cables I sell are even moreso like UPOCC copper as they are a litz design, the 14g wire has ~1060 individually insulated runs of 44g UPOCC copper wire braided around a flat film core which makes them even faster and more detailed than using regular UPOCC copper wire. If you ever want to give my cables a try I have a 10' pair of 14 or 20g cables I can loan out. The 14g cable is slightly better than the 20 even with small amps but the difference is very minor until you get into higher powered systems.