Using good head phones seemed really helpful.
I was going crazy today trying to restore a digitized transfer of a 1964 pressing of a mono LP record.
I used all the good noise and click/pop reduction tricks but thought there still seemed to be some noise. Lots and lots of light reduction passes.
Then, I took off the headphones and used my speakers and it's remarkable how little noise there is left to hear.
Unlike mixing etc., the headphones proved really useful for highlighting both the noise and the artifacts of the noise reducing filters so I ended up working extra hard at minimizing the noise while not creating artifacts.
Good news.
I thought I'd share the experience as I don't do this type of stuff often and it seemed to work really well today.
best regards,
mike