I will take this as a resounding no from everyone on my original question then.

I would experiment myself but I don't think my replay chain is transparent enough, as other than my CD player I just have a mac mini linked up to a V-DAC via optical that is clearly inferior to the CD player so unlikely to show and difference in rips.

Not wishing to fan the flames too much but just because we can't explain something at first, doesn't mean it isn't happening. Scientific progress would be rather stunted if that were the case.

F80