The 6N7 is designed to operate in push-pull Class B2 with zero grid bias or quiescent push-pull. The anode to anode load is given as 8,000 Ohm. The 6N7 is capable of 10 W audio output, and a pair operating in parallel push-pull will produce 20 Watts. A single valve operating in Class A is effective as a driver for another 6N7 as the output stage.
Although made in the USA this valve was exported to the UK where Brimar were the distributor.
Made in USa with a serial number of SC899A.
Distributed by Brimar in the Uk, a BVA member.
The thin metal tube envelope is 25 mm in diameter and, excluding the IO base pins is 67 mm tall.
References: Datasheet, 3002 & 1040. Type 6N7 was first introduced in 1936.