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(!) (PAIR) JAN-CHS-5933=807W Sylvania NOS and used/good - double D getters 1952 (66ma and 62.5ma)
(!) (Recommended Pair) 0B2 GE Holland made in Japan NOS 1970's (argon gas)
(!) (Recommended Pair) 0B2 GE Italy made in Japan NOS 1970's (argon gas)
(!) (Recommended Pair) 0B2 RCA NOS 1970 (neon gas)
(!) (Recommended Pair) 12B4A RCA NOS 1969-1971 (42ma and 47ma)
(!) (Recommended Pair) 12B4A Sylvania NOS 1960's (26ma and 27ma)
(!) (Recommended Single) 6N7GT Raytheon coated glass NOS 1940's (3.2/3.5ma)
(!) (Recommended SINGLE) 6U8A Sylvania NOS 1960's (19.8ma/10.6ma)
(!) (Recommended Sylvania Pair) 6BQ5 Sylvania black plate 1960's and 1973 (68ma and 62.5ma) (recommended for FIXED-BIAS amp only due to high current)
(!) (Single) 12AX7 GE used/good 1972 (Gm=1300/1400 and 0.8/0.9ma)
(!) (Single) 5933=807W Sylvania double D getters like new 1950 (64ma)
(!) (Single) 5963=12AU7 GE NOS 1960's (11.6/11.8ma)
(!) (SINGLE) 6L6GB RCA Baldwin gray plate used/good 1959 (65ma)
(!) (Single) 6L6WGB=5881 Sylvania black base NOS 1975 (78.5ma)
(!) (SINGLE) ECC85=6AQ8 Sylvania black plates NOS 1960's (12.2/9.8ma)
(!) (SINGLE) JAN-6DJ8 GE NOS 1982 (13/16.8ma)
(!) (~ Recommended Pair ~) 6HQ5 Sylvania branded Raytheon NOS 1970 era same build (13.2/14.6ma)
(!) (~ Recommended Pair ~) 6HQ5 Sylvania NOS 1970 era same build (12.5/13ma)
(!) 0B2=108C1 Valvo Germany like new in white boxes 1960 era (neon gas)
(!) 12AU7A Sylvania NOS 1960 (10/10.1ma) 1-2% section balance