The Tape Machines were brenell, Ampex, Scully, and Telefunken. no ferrograph.
the REDD.51 console did not handle stereo mixing too well.
While mixing, the 4 track return channels were 1, 2, 7, and 8. These were grouped as two stereo pairs(1_2 and 7_8). Tape tracks 1 and 2 came into channels 1 and 2. Tape tracks 3 and 4 came into the desk on channels 7 and 8...what this meant was that when listening/monitoring in stereo, tracks 1 and 3 were ALWAYS panned hard left and tracks 3 and 4 were hard panned to the right.
i will never buy any beatles in stereo... as Lowry says, the Mono Mixes were given the most consideration, the most effort. Stereo as a format was in its infancy..hell, Norman Smith and the other "main" engineers were on holiday during the stereo mix sessions!