Earlier this year my sister threw out - in my direction - a John Cooper Clarke 'best of ' cd that she had only just purchased. Via her stack system (JVC or Denon I think ) she complained it was completely unintelligible. She has never, ever rejected any recorded music on any format before.
I used to have some of JCC's stuff in my vinyl period, and sure enough those tracks that I used to know well now sounded hard and brittle.
And some were indeed completely unintelligible. It took me a few months to realize that this was, in fact, the perfect test disc. Improvements to the system can easily be guaged by well recorded material, but the final and most fascinating test for me is that atrocious Mancunian genius. And, little by little, the sound becomes more intelligible.
I'd still like to horsewhip the guy responsible for the digital transfer though...