Noval socket, 9 pin miniature (USA pico-9) B9A Used for Radio/TV-reception etc. Filament Vf 6.3 Volt / If 0.6 Ampere / Indirect / Specified voltage AND current AC/DC Description 11 s controlled warm-up heater makes use possible even in 600 mA series heater operated TV receivers.

The 6AU8 valve is an electron tube (or thermionic valve) used in electronic equipment, such as audio amplifiers or radio receivers. This tube is a double triode type, meaning it contains two triode sections within the same enclosure. The 6AU8 has been used in several applications, and its presence is common in many electronic circuits of the era in which it was produced. Its double triode configuration makes it versatile and suitable for amplifying signals in different ways, depending on the needs of the circuit in which it is used. If you have further questions about the 6AU8 tube or how it is used in a certain circuit, please don't hesitate to ask. It will be a pleasure to provide you with further information.