1934 RCA PB90 ribbon mic time capsule

Look what’s on the bench today….

RCA PB90 ribbon microphone from 1934

This is a beautiful RCA PB90, in complete original condition, but need of a little loving care to bring it back to its former glory. Here’s the output transformer….

RCA PB90 Ribbon mic transformer, 1934

It’s date stamped 21st September 1934! 78 years old.  The mic shares a birthday with Leonard Cohen!

That’s amazing.