Technical Information


Application Note 01. Power Supply Design Considerations

Application Note 05. The White Spark Problem

Application Note 06. Center tapped heaters (V4 tubes)

Application Note 08. Grid Voltage Measurement Methods

Power Supply Design Note-2

Tech Note 01. Getter Materials

Tech Note 02. Filament Quality

Tech Note 03. Current Source Supply for the Filament

Tech Note 04. Mains Voltage problems and solutions

Tech Note 05. Heater Voltage vs. Tube life

What makes good tube sound?