6.3 V indirectly heated cathode, manufactured by Standard Telephones and Cables Ltd. Radio Receiver Valve Division, Footscray, Sidcup, Kent, England, 1951-1970. Brimar was the brand used by STC on receiving valves.

The 6BR7 is a sharp cut-off pentode designed for use in the input stages of audio amplifiers It has similar electrical characteristics to the 6J7 but is designed to have low hum, hiss and microphony.

Physical Description

Tubular glass bulb on nine pin miniature glass button base with pin protector and with top exhaust tip. Valve is contained in rectangular red and black coloured cardboard box (original carton).

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