@cleeds: The information regarding the Dolby issue came from Bernie Grundman, Chad Kassem, and Michael Fremer. Fremer posted a video on his Analog Corner website telling the story, which was subsequently further discussed with Grundman in another video.
A number of years back Fremer got a call from Grundman, informing him of the situation. The Tea For The Tillerman tape boxes were marked indicating that Dolby noise reduction had NOT been used in the recording of the album, so Bernie mastered the LP for release by Chad Kassem on his Analogue Productions record label without the Dolby playback circuit engaged. He told Fremer that when so mastered, the resulting sound was very bright, far brighter than the Island copy of the LP Fremer had supplied him with for a reference (comparing a new remaster with the original is very common in high end mastering).
Grundman sent Fremer a test pressing, asking him if he thought the remaster should be made with the high frequencies decreased somewhat, as he didn’t think audiophiles would like the sound of the LP mastered "flat". Fremer said no, to cut the lacquer flat, brightness and all. Hearing that first lacquer is when Fremer realized the characteristic sound of the Ovation guitar used on the album was muted, lacking it’s inherent "bite". As I said above, I heard the high frequency sheen of the drumset cymbals missing, along with the overtones of the snare drum, toms, and bass drum.
The first pressing "pink label" Island LP had been on Harry Pearson’s Super Disc list for years, and I assumed the problem I heard with my copy of the LP was a result of it being a later "sunray" Island label pressing. Nope, the Island LP (as well as the U.S.A. pressing) had been incorrectly mastered with the Dolby noise reduction circuit engaged, reducing the frequency response with a declining slope as frequency rose.
The Analogue Productions pressing of Tea For The Tillerman album is THE Version to own. By the way, it was also Grundman who discovered the mistake made in the mastering of the Kind Of Blue album, for it’s entire history! That topic was also discussed by Grundman, Fremer, and Kassem in a long YouTube video.