ALL THE FOLLOWING TUBES WERE Gm TESTED USING A HICKOK 752 TESTER:
2X AMPEREX 6DJ8 PLATE GETTER TEST STRONG
2X MULLARD BLACKBURN 12AU7 Gf2 B917,Gf2 B915 BALANCED AND STRONG AT 3000+ (1250 MIN)
MULLARD 7247 BLACKBURN TEST STRONG (OVER DOUBLE MIN)
2X TELEFUNKEN 12AU7 ECC82, 1 RIB PLATE, 1 SMOOTH TEST CLOSE (DOUBLE MIN)
TELEFUNKEN 12AX7 MATCH SMOOTH STRONG 2000,2000 (800 MIN)
2X RCA BLACKPLATE 12AX7 1200,1240 AND 1800,1820 (800 MIN)
RCA BLACKPLATE 12AU7 3000,3100 (1350 MIN)
2X RCA 7199 TEST STRONG (DOUBLE MIN)
2X RCA BLACK WING 12AT7 VERY STRONG (OVER DOUBLE MIN)
SYLVANIA 7199 TEST VERY STRONG (OVER DOUBLE MIN)
$275 ALL
NOS RCA 7868 $35
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