Sylvania 6B4G -Dual Flat Plate - usedSylvania 6B4G - Dual Flat Plate -  Amplitrex Tested - Excellent - Matched PairVery nice pair of Sylvania 6B4G clear glass dual flat plate directly heated triodes. These are a higher powered version of the 2A3 with different base. Matching date codes. Matching internal and ex...159.00

Sylvania 6B4G - Dual Flat Plate - Amplitrex Tested - Excellent - Matched Pair [Expired]


no longer for sale

Very nice pair of Sylvania 6B4G clear glass dual flat plate directly heated triodes. These are a higher powered version of the 2A3 with different base. Matching date codes. Matching internal and external construction. Rectangular getters. Amplitrex tested for grid voltage and transconductance at 250v and 60mA. Test excellent and matched:  Tube 1: Grid: - 42.0v; GM: 5.6 mA/v  Tube 2: Grid: - 42.5v; GM: 5.85 mA/v  Buyer to pay shipping and PP fees. Cheers and thanks for looking.