The Live Aid concert in London was also the first time that the BBC outside broadcast sound equipment had been used for an event of such scale. In stark contrast to the mirrored sound systems commonly used by the rock band touring engineers, with two 40–48-channel mixing consoles at the front of house and another pair for monitors, the BBC sound engineers had to use multiple 12-channel desks. Some credit this as the point where the mainstream entertainment industry realised that the rock concert industry had overtaken them in technical expertise.