Japanese Zep CD's-the sound remains the same

one more thing and i'm out....there are numerous manufacturing and stability studies that have been done on optical discs new and old. most of the time you do get what you pay for with software....even of the prerecorded music variety. there are things hi end hardware can't cure alone. enjoy zepplin no matter matter the country of origin

Seandtaylor99,
I have had about 150 CDs go bad on me. All manufactured by Philips Dupont Optical (PDO) in the UK. Fortunately all but 2 have been replaced with the same titles. The majority were Hyperion classical CDs. Most recent have been Deutsch Gramophone (Archiv). I now inspect them every six months.

I'm sorry Jay Douglas there may be truth in what you are saying in general terms however I can assure you these discs are identical (Physical Graffiti)and THAT is the point of the post.
These Japanese imports are not cheap and when members on this forum suggest that there is sonic benefits to be had then they really need to stand by their statements.

The Japanese CD imports were much better in the past because the Japanese used original master tapes for their CDs while the American manufacturers used second and third generation mix down tapes. Since most new re-releases now use master tapes and are re-mastered, the new issues sound pretty much the same. But this is not true of most original releases. This is also true of Japanese and European vinyl. The country of origin rule applies in the case of vinyl. Usually the country where the disc was recorded has the original master tapes so they have the first generation recordings. Listen to a Japanese, German or original UK recording and you will hear a big difference between them and the second and third generation recordings that were issued in the US.