Harris' drums were firstly set up against the far wall of the studio's main recording room, Wessex Studio 1, and were microphoned in "the usual rock arrangement", using "about ten microphones all close to the kit – bass drum, snare, hi-hat, tom-toms, overheads, ambient etc." Following this, Brown and Hollis rented the Telefunken U47, a large-diaphragm condenser valve microphone manufactured by Georg Neumann GmbH during the years 1949–1965. They chose it from an offering of several valve mics, which besides the U47 included a Neumann U48, M49 and "Tube", alongside "the old Wessex Collection" which included three AKG C12As. They carefully listened to each before settling on the U47. However, they placed it "30 feet away from the kit near the control-room window," which became an issue as the physical distance triggered a delay of 26-32 milliseconds.