Bob, what does the Purist disc do that no other disc or combinations of discs can offer ? Since one can find recordings with white noise, pink noise, brown noise, sine waves, square waves, triangle waves, frequency sweeps, etc... and all of the various dynamic waveforms known to man via musical instruments, what could this disc do differently ? I am not trying to be a "smart ass", i'd simply like to know what they tell you in terms of marketing their product ? Sean
>