Just got my Classic Powerkord with the wattgate 320i. Upon plug in the sound appears full of details. Upon more critical listening and switching back to a 12 AWG stock cable, the RA sounded thin (lacks body) and the "details" were not well defined. This is so different from the reviews that I have read. I understand the RA would probably need some burn-in period. Is this characteristic of the Classics when new ?