The Abbey Road Studios EMI TG12345 MK IV recording console was housed in Abbey Road's famed Studio 2 from 1971 to 1983.
Three members of the rock band Beatles - Paul McCartney, George Harrison and Ringo Starr - also recorded music as solo artists with the console, with musician Kate Bush and rock band The Cure also occupying Studio 2 to use the desk.
The TG12345 MK IV was created as a collaboration between Abbey Road and EMI engineers and is considered one of the greatest consoles ever constructed.
Hedges kept the console in his own studio since then, with the TG12345 MK IV still in "excellent working condition," the 'Rolling Stone' reported.
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The twin TG12345 MK IV unit, which was in Abbey Road's Studio 3 before it was moved into Studio 1, is currently housed in Austria's Prime Studios.
The recording console's auction block comes with letters of provenance, including one from ex-Abbey Road Studio Manager Ken Townsend, as well as instruction manual, a documented history of the desk courtesy of Abbey Road technician Brian Gibson and a copy of Dark Side of the Moon.