The Beatles’ recordings are arguably the most dissected pop songs of all time. The studios they were recorded in, the instruments used, and the signal chain from the microphones all the way to the mixing desk above EMI’s Abbey Road Studio 2, where the Beatles did the bulk of their recording, have all been analyzed and written about to the nth degree. The microphones the Beatles used for their vocals were typically Neumann U-47 and U-48 vacuum tube microphones built in the 1950s, which their producer George Martin has written were his favorite microphones.
Source: By Ed Driscoll /pjmedia.com