like akg_ca said, OCC is an indicator, but not the ultimate deciding factor on how well a cable sounds. There are other considerations, such as type of metal (copper/silver), strand size and bundling versus solid core, geometry, shielding, terminations, etc.
That being said, OCC copper and ultra-high purity copper are generally much better sounding than normal manufactured copper, which can be OFC (or oxygen free copper). The smoothing of wire metal surface also plays a factor in signal clarity.
That being said, OCC copper and ultra-high purity copper are generally much better sounding than normal manufactured copper, which can be OFC (or oxygen free copper). The smoothing of wire metal surface also plays a factor in signal clarity.