Along Dan's points above.....do the hairline scratches (which are there sometimes even with the newest of records due to handling and sleeves, etc) have anything to do with noise
at all?
They don't seem to correlate exactly in my trials ......
Many times I've bought used records with
lotsa' swirly scratches on them - I have to look at that three times over to make sure it's worth the 'chance' of spending $5 or so on them - then when I eventually play them (I clean each record first manually first) I
often find the record is perfectly quiet with no alarming clicks and pops.
Alternatively, I have bought records noting that swirling scratches are pretty slight....and the record crackles like Rice Krispies hitting milk!!
John