the beatles' final album "abbey road", was the only one to be recorded using a transistorised mixing console, the emi tg12345, rather than the earlier redd valve consoles. "let it be" was recorded largely at the beatles' own apple studios, using borrowed redd valve consoles from emi after the designer magic alex (alex mardas) failed to come up with a suitable desk for the studio. engineer geoff emerick has said that the transistorised console played a large part in shaping overall sound of "abbey road", lacking the aggressive edge of the valve consoles.