HP AMPEREX BY PHILIPS HOLLAND ECC82 12AU7
TESTED DIGITAL TUBETESTER
DATA SHEET Ia=10.5 mA - S=2.2 mA/V
RESULTS TUBE 1 Ia= 11.0 - 10.6 - S=2.2 - 2.2 mA/V
SHORT RIBBED GRAY PLATES, RING GETTER, STRONG VALUES
MADE IN HEERLEN HOLLAND BY PHILIPS , MID 60's PRODUCTION