Description
The 2A3 is a three-electrode, high vacuum type of power amplifier tube or valve for use in the power-output stage of A.C. operated receivers.
The 2A3 has also been used on HI-END amplifiers with stunning results.
We are proud to show some of the best 2A3 variations.
The exceptionally large power-handling ability of the 2A3 is the results of its design features. Among these are its extremely high mutual conductance and its large effective cathode area.
Filament voltage 2.5 Volts
Filament current 2.5 Amps
Plate Voltage 250 Volts max
Grid Voltage -45
Plate Current 60mA
Mutual Conductance 5.2 Sylvania 2A3 with green leaf on base and etched lettering on base.
Stunning pair of New Old Stock MINT one boxed Raytheon 2A3 mono plate with red paper on glass.
Made in the 1940s and reckoned to be one of the best sounding valve.
Like all 2A3’s great audio valves!
Tested with AVO VCM 163:
Raytheon 2A3 53mA 100%
Raytheon 2A3 52mA 100%
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