I’m also curious about George’s recommendations.
I’d suggest a few recordings with which you are very familiar. If you’ve had some that you ever thought to yourself sounded particularly thin/metallic/digital, maybe try those. As cheesy as they are, Chesky’s "Ultimate Demonstration Disc" and the "World’s Greatest Audiophile Vocal Recordings." I believe both include the obligatory Rebecca Pidgeon Spanish Harlem. I’ve found both to be good test-type discs for comparisons...just skip the narrator on the demonstration disc.
edit--agree with George on trying the actual CDs on a decent transport.
@stfoth
I’m very appreciative of your reply. Thank you.
To your points:
Would you suggest then listening to this source of Rebecca Pidgeon Spanish Harlem?
http://hostuje.net/file.php?id=474eb0e4c6a97d2ab1e0ffcfd9d53fdaSecondly, with regard to using a CD, while I’m of the opinion that wouldn’t and shouldn’t matter (in lieu of same from USB), I have two CDs that can act as transport. An Oppo UDP-205 and an Emotiva ERC-3. So, are we saying that if I have a recording on CD and play from one of those players, I should (or might) expect different results than if I play the same (ripped from CD) file on a USB stick from the Oppo?