Whart, if you're referring to RCA Shaded Dog originals versus the 45rpm reissues from Classic Records and Analogue Production, my experience is that there is no comparison - the 45rpm reissues are just so much better.
I've listened to a few of the newly released 33rpm reissues from Analogue Productions, and they are also significantly better than the originals and more comparable to the 45s.
When I think of what the master tape must sound like, I think I'm getting much closer to that sound with these than with any of the originals Shaded Dogs.
If you're comparing to the Classic Records 33rpm reissues from a decade ago, then it's very much a mixed bag.
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I've listened to a few of the newly released 33rpm reissues from Analogue Productions, and they are also significantly better than the originals and more comparable to the 45s.
When I think of what the master tape must sound like, I think I'm getting much closer to that sound with these than with any of the originals Shaded Dogs.
If you're comparing to the Classic Records 33rpm reissues from a decade ago, then it's very much a mixed bag.
.