The note below is taken from a different Discogs entry that pertains to this release (orange label, UK first pressing): willyrobinson August 1, 2011The notes should read "Original release with the ORANGE Warner Bros label" (for some reason on this record it's more red than orange)The first UK release was [made and] distribited by Pye Records in London, presumably up until this agreement ended sometime in 1971 when the Kinney corporation entered into a joint distribution and pressing deal with CBS, and the album was then pressed with the green label with the Kinney number K 46021 in the dead wax.In common with other orange label releases and other UK releases of Warner seven arts/reprise/Elektra albums at the time, the original UK pressing sounds (to my ears) superior to the origanal US green label pressing in terms of clartity and texture and focus. There are a number of reasons why this may be the case, but I suspect it's not so much an EQ issue as a phasing issue - I suspect the US masters may have been processed in some way using the Haeco-csg device in order to sound better on AM radio. The difference is staggering rather than subtle, with the UK release so much more alive-sounding. Sometimes though, because these orange label pressings were so heavy they were prone to non-fill on track one of either side.Jerry Garcia himself was very disappointed with the [US] pressing: "Our first stereo master tapes preserved some of that quality when you had a good enough playback system to really hear; but everything that happened to it after that, the mastering - all of the things we didn't know about, the part about making discs which we neglected to learn about - that part of it, that was how we found out what doesn't go on a disc. So it was disappointing to us when the disc came out and it sounded muddy and it was terrible and we couldn't understand that all the stuff that - y'know all the stuff that we had put together so carefully didn't really get accross." (Interview - Anthem to Beauty)It appears the early UK pressings may have escaped the texture-stripping phase treatment (or whatever it was), but later UK pressings with the Kinney number on the cover sound similar to the US pressings.The album was later remixed in the early 1970s (I believe by the bass player Phil Lesh), but that's a totally different release, with different instruments in different channels, and sometimes different source material used.