2 1960s VINTAGE BRITISH BRIMAR ECC83 12AX7MADE IN ENGLAND AVO CT-160 TESTED results below
Code: Valve one has [older] Brimar 1573 Design code; Valve 2 has Brimar 2162 Design code; Made at Brimar factory, England, UK. Tested good for insulation: hot & cold; shorts; continuity; microphony; gas; current draw and output. No hiss, no hum, no noise, Guaranteed. Test data: Valve 1:
Triode 1: 1.3 mA/V (1300 micromhos) 81%
Triode 2: 2.2 mA/V (2200 micromhos) 137% Valve 2:
Triode 1: 1.5 mA/V (1500 micromhos) 94%
Triode 2: 1.7 mA/V (1700 micromhos) 106% (Avo book spec 100% for NOS valve: 1.6mA/V; (1600 micromhos) per triode).
Minimum good = 50%-60% Tested on AVO CT-160 valve tester
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