2A3 TUNGSOL smoked glass with lettering on base early type large getter matched pair

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

TUNGSOL 2A3 with smoked glass with lettering on base.

Both TUNGSOL 2A3 valves have same design with large round top mica

Like all 2A3’s great audio valves!

Tested with AVO VCM 163:

Tungsol 2A3 56mA 100%

Tungsol 2A3 55mA 100%