The Capitol Records engineer who prepared The Beatles recordings for the 60’s U.S. LP’s added gratuitous electronic reverb to the copy tapes he received from Parlophone. You really haven’t heard The Beatles early albums until you hear the UK versions. Rubber Soul and Revolver are really good albums.
Capitol Records are notorious for their 1960’s "Duo-Phonic" LP’s. That was their attempt to create "simulated stereo" from mono tapes. They added their regular reverb, but also created a slight phase difference between left and right channels, and then equalized the two channels differently---one with the high frequencies filtered, the other the bass. They sound atrocious!
Capitol did that to all The Beach Boys albums up through and including the Wild Honey album (except for Surfer Girl, which for some reason was a true stereo recording. Analogue Productions has put it out on a fantastic-sounding LP, as well as most of the other BB’s Capitol albums, and even some of their Reprise ones. Paul McCartney still considers Pet Sounds the best album ever recorded and released), as well as other Capitol artists.
