Please excuse the OT subject. I have been recently watching old Alfred Hitchcock TV series that is out on DVD.My question if anyone knows, how did they get such great audio back in the 1950s. I mean it is superb even today. Ok I know they were in a studio, but I doubt if they had lavs hidden in those days, so what did they use, a mic on a studio boom ? I NEVER see it in the shadows. If anyone can give me a clue , please do. The audio portion of these shows is really good for being done 50 years ago.