[John Williamson]

On 05/08/2019 12:23, wrote:
Do you know of any examples you can list here, that I can check out?

Not unless you have access to the master tape archives at a studio and
the machine used to record the album or track.

If you do, then you will have all you need to do the comparison. For
some reason, record companies tend not to leave their masters lying
round on the web.

--
Tciao for Now!

John.