LOL @ Paul....again!
I do use OFC cables on my system, and there was a noticeable improvement in the bottom end. My brother changed them without my knowing and I commented on it some days later as I had to consistently reduce the bass settings on the amp.
I listen to a lot of organ music ( don't laugh
) which is notorious for reproductive problems ( continue not to laugh ) especially at the lower end... ( ok now you can laugh )
I now have a set of OFC cables... How would your obvious knowledge of such things explain the presence of oxygen to affect conductive properties, or is it just an 'impurity'?