Knowing what the Offset is, won’t fix everything. If you are talking about a Read Offset and if your drive can’t fully Overread, there are many albums you won’t rip properly.
The very least of what Offset Correction does is fixes the ripple effect where content from one track oh-so-slightly bleeds into the boundaries of another track. If a drive cannot do full Overreading, then what I just mentioned is the most that Offset Correction will fix. There is a similar ripple effect with Write Offsets, and you can fix the ripple, but you cannot fix both the beginning and the end of the disc. Something is missing somewhere.
For exact audio copying purposes, there is no burning equivalent to Overreading (even though there is something called “Overburning”). If you have a Write Offset of anything other than 0, your drive cannot be used to burn exact copies of every possible audio CD. Different burners with positive or negative Write Offsets can be used for burning exact copies of different albums. There is no one burner with a Write Offset that can do everything right, but everyone keeps praising the Premium2 as if there’s nothing wrong with the fact that it has a Write Offset of -30. If you can’t have 0, then at the very least, the smaller the better. If you can have a Write Offset of 0, then you probably don’t have any bells and whistles like with the Premium2.
What you have to do is be conscientious about which albums the Premium2 can or can’t completely duplicate, have fun with the bells & whistles on the many albums that a Premium2 can completely duplicate, but at the same time you have to be ready with other very specific drives for the few albums a Premium2 can’t completely duplicate, and you’ll have to live without AMQR on those albums if you want every last 1 or 0 on the CD-R to be the exactly same as the original disc.
Now again, let me stress this as strongly as possible:
A -30 Write Offset cannot exactly duplicate every possible album, even if you or your burning software are aware of the offset. Stop trying to regard the Premiums (or Plextor drives in general) as any one-stop-shop for authentic audio CD duplication. Be scientific, test your burnt copies with Secure ripping and independent checksums, and stop making assumptions that your copies from a Premium2 are always completely exact.
If a drive cannot fully Overread (most nonPlextors or fake Plextors can’t), don’t use it to test your burnt discs. Only use a fully-Overreading drive, and only with a Read Offset you actually know, with ripping software that supports Offset Correction. Otherwise you could be burning some inaccuracies that your testing process cannot catch. To the best of my knowledge, ASUS drives cannot fully Overread (because they fall into the tragic category of “most drives”), so they should have no involvement in the ripping of the original, or involvement in the testing of the copy.