" wrote:

Most people don't realize that sound reproduction was the equivalent
of the "space race" during the 1920's and 30's.

Complete and utter ******** ! Back then it was merely 'industrial
engineering' and circuits were made only as good as needed to be to get
paid for them. They were pretty crap too.

It was only really in the 60s and on that audio started to get special
treatment for fidelity. It's still going on right now.

Graham