4 X 6V6GT RCA TUBE. SQUARE GETTER. ROUND BLACK PLATES. MATCHED QUAD. TESTED IN AMPLITREX AT1000 TUBE TESTER. 84% EMISSION (EM) 100% TRANSCONDUCTANCE (GM) 3.6mA/V GAS. 86% EMISSION (EM) 102% TRANSCONDUCTANCE (GM) 4.2mA/V GAS.
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