[Keri Szafir] is no exception, and she’s produced a stereo tube amp with a few modern features. Electrically it’s a relatively conventional single-ended design using a double triode and a ...

The power amplifier section also makes use of 2P29L tubes, which have similar characteristics as far as power draw is concerned. Normally, vacuum tubes rely on a resistive heater to eject ...

When it comes to listening on the best headphones, many hi-fi fans swear by the power of tubes. Amplifiers that use vacuum tubes instead of – or alongside – solid-state electronics are ...

The video explains the operation of the vacuum tube, specifically the triode, which is essential in modern communication devices like radios and telephones. It describes how a tungsten filament emits ...