No you do not. We do our best to keep any physics and maths to the bare minimum in our program. What little there is, is simple to understand and can be learned quite easily.

Most recording engineers have only a slight knowledge of electronics. There are always skilled technicians just a phone-call away in the event an equipment failure occurs. In fact, being a recording studio maintenance engineer is quite a lucrative and interesting occupation. Most of them start life as sound engineers.

In the not-too-distant past, the sound engineer really did need to understand his equipment because he alone was responsible for its maintenance and functionality. In this new throwaway world, replacement is often easier and quicker than repair.