One does not need samples and digitization to check out the replay quality differences. Just put on the best test LP with sinusoidal signal that you have and run it: Check at 1000Hz and above.Then do the same with a cd. No, you do not need an blind A/B/X test, you just have to listen a few times. The CD signal comes through clearly without any audible distortions
@greynol: The differences Cliveb highlighted indicate that he could easily ABX the samples so there doesn't seem to be the need to ask him to do so.
And his opinions were based on careful listening to the samples under discussion rather than a test signal