Testing Directly-Heated Triodes

In the darkest corner of the catacombs under the lab, illuminated only by glowing directly-heated triode filaments, top secret experimental research is being conducted…

We have been testing directly-heated triodes, including Transmitting Triodes, at high voltages…

They are very, VERY linear devices.

Perhaps the best the world will ever see. And we plan on using several of them in a new product.

Agnew Analog Reference Instruments: Outrageously high quality for truth seekers around the universe.