I wonder what the perfect reference disc would include. Our first attempt, the Audiophile's Reference, has sold thousands and served her audience well. But the Audiophile's Reference was in service of the accompanying book which was designed to help audiophiles perfect their home stereo system setups. Once you've gotten everything right, then what? I am wondering what it might look like to build what perhaps would be called a finished disc. The ultimate checksum. I'd love to hear your thoughts.