Tesla Tube Factory Visit—Czech Republic 1998

In 1998 I was invited to the Czech Republic by the late Dr. Riccardo Kron and his wife Eunice to visit the Tesla tube factory. The couple had founded KR Audio in the early 1990s to build and market Dr. Kron’s tube amplifier designs that made use of his giant T-1610 “Kronzilla“ hand-built triode tubes as well as others including a brand new 300B design. I recently discovered the video tape and present here an edited version showing how the tubes’ innards are hand assembled in the factory, the glass blown and the vacuum formed within the assembled tube. After the tour the Krons took me sight-seeing and yes, I found a great used record store and did serious credit card damage!