The 7 1/2ips reel to reel (re)issued by Ampex duplication from 1969-1971 AND the 2004 cd in the Capitol rainbow box vol. 1 (remastered by Ted Jensen): ARE THE ABSOLUTE, HIGHEST-RES SOURCES OF THE AUTHENTIC MATERIAL FOR THIS ALBUM. There's actually treble and bass left on it after all(!)....WITHOUT the "wet cardboard box sludge" the record (Dave Marsh famously decried) is swamped with.