The 46 Triode

46. The 46 is a strange tube, a “dual grid power amplifier tube” that is actually meant to be run as a triode, this tube was made for industrial amplification in a same-drives-same configuration, almost like a Sakuma design. Used this way the 46 in push pull could make 20 watts of low distortion Class B power. 90 years later its finally found favor in the hifi community, who have recognized it's flat out amazing sound in single ended applications. What a good thing that this tube was “rediscovered”! This one dates to 1932 or so. Tube data for the 46 can be found here.