He is not well-known, but should be; He was CERTAINLY George Martin’s favorite engineer. It was only because the Beatles were an unknown Liverpool band making an unpleasant test, that Stuart was not involved with their session (and therefore the Beatles career).
Otherwise – Stuart did most of George Martin’s recording sessions (including one of my favorite recordings ever – “Goodness Gracious Me”/Peter Sellars and Sophia Loren). However, as with most Abbey Road engineers, he was wonderfully talented. He was largely responsible for developing the famous echo chambers, testing and adjusting the chambers as an engineering project.
As he began in the 1950s when pop was first developing, he and Peter Bown created many of the techniques and directions used for the many Abbey Road hits of the 1950s and 60s…
(Article by Brian Kehew)