Diverging from CRTs only briefly but holding steadfast to the warm, soft glow of valves, here I introduce a piece of Valve Art crafted long before Oscilloclock came into existence!

I spotted this vintage 1967 ultrasonic cleaner unit at the local Ham Fair, and it was love at first sight. Originally with a steel cabinet with peeling paint, the unit wasn’t much to look at on the outside. But after applying a copper coat to the chassis and fitting a sleek acrylic cabinet, this device simply dazzles!

Featuring not one, but two of these stunning Hitachi 3T12 transmitting valves!

Who needs a heater in winter, when you can have one of these power-hungry devices?

I bet this lovely triode, with its zirconium-plated anode and thorium-tungsten filament, really impressed the original owner of this ultrasonic cleaner…

These aesthetic innards simply ooze awesomeness. It’s as if they actually designed this for the art museum!

Made in 1967, but boasting an incredible 200W output – absolutely deadly !

Sadly, my workshop no longer had room for this historic showpiece, so with a heavy heart, I recently powered it down for the last time. However it will go to a loving new home…

Long live vintage ultrasonic cleaners!