This tube is an octal-based medium mu twin triode with separate indirectly heated cathodes. It was originally designed in the 1930’s as an audio frequency voltage amplifier. It is a pre-cursor to the B9A ECC series. It was widely used for input amplification and driver stages in older audio amplifiers; some designers still prefer these tubes for the same application in todays designs.
The Golden Dragon 6SN7GT is an excellent example manufactured in China to strict UK specification and should not be confused with the inferior examples of the same tube types which are available at a lower price elsewhere but which are not considered of sufficient quality to be included in the Golden Dragon range.
