It may help to try a more detailed cartridge, but it also might not. And it might have something to do with wear on some records, and it might not.
Many of the newer re-releases of CD's are re-mixed.
As such, some of the things that were not so prominent in the original LP mix may now be more prominent in the new CD re-release mix.
You'd need to know that the mix used for the CD recording was exactly the same as the older LP mix, in order to make a meaningful comparison.
Many of the "digitally remastered" CD's which make a big deal out of this with a sticker on the front of the jewel box, are also re-mixed when they are re-mastered. When this is done, all bets are off, as far as comparisons are concerned.
Another thing is regarding newer LP's which were pressed from an original digital recording. If the original master was done in digital, sometimes the better version is actually on the CD, because the things that can make an LP better are no longer there. In that case, you'd have all the limitations of digital added to all the limitations of LP, and then it could be possible that the CD has the lesser loss of the 2.
Many of the newer re-releases of CD's are re-mixed.
As such, some of the things that were not so prominent in the original LP mix may now be more prominent in the new CD re-release mix.
You'd need to know that the mix used for the CD recording was exactly the same as the older LP mix, in order to make a meaningful comparison.
Many of the "digitally remastered" CD's which make a big deal out of this with a sticker on the front of the jewel box, are also re-mixed when they are re-mastered. When this is done, all bets are off, as far as comparisons are concerned.
Another thing is regarding newer LP's which were pressed from an original digital recording. If the original master was done in digital, sometimes the better version is actually on the CD, because the things that can make an LP better are no longer there. In that case, you'd have all the limitations of digital added to all the limitations of LP, and then it could be possible that the CD has the lesser loss of the 2.