(!!) EL84 Ultron USSR Russia used 1990 era (32ma)
(!!) JRC-12AU7 RCA NOS long gray plates mid-1950's "D" getter (9/11.6ma)
(!) (- BEST VALUE) 6AU5GT GE gray plates NOS 1960's (1 pair: 55ma and 56ma)
(!) (- BEST VALUE) 6AU5GT GE gray plates NOS 1960's (1 pair: 66.5ma and 65ma)
(!) (- BEST VALUE) 6AU5GT GE gray plates NOS 1960's (1 pair: 75ma and 74ma)
(!) (Best Pair) 5763 Sylvania JAN NOS 1973 (39.6ma and 40ma)
(!) (Best Value Pair) ECC84=6CW7 Ultron East Germany by RFT 1970's 2-3% matched (9.6/11.6ma and 9.0/11.0ma)
(!) (BEST VALUE PAIR) EL84 Brimar England NOS 1962 (67ma and 66ma) (recommended for FIXED-BIAS amp only due to high current)
(!) (BEST VERSION) JAN-1B3GT=1G3GT Sylvania NOS 1970's (12 in stock)
(!) (BEST VERSION) JAN-1B3GT=1G3GT Tungsol NOS 1960's (15 in stock)
(!) (Recommended Pair) 6AH6WA GE NOS 1980's (10/10.6ma)
(!) (Recommended Pair) 6AH6WA GE NOS 1980's (8.3/8.6ma) (Same Gm)
(!) (Recommended Pair) 6AH6WA GE NOS 1980's (9.6/10ma)
(!) (Recommended Pair) 6AH6WA GE NOS 1983 (9.0/9.4ma)
(!) (Single) 5963=12AU7 GE NOS 1960's (11.6/11.8ma)
(!) 404A Western Electric used/good (17ma)
(!) JTL-12AU7 Tungsol narrow plates "D" getter NOS 1955 bottom mica is tilted (10.4/10.6ma)
(1 PAIR) 408A Western Electric used/good 1964 (79/60 and 78/60)
(1 PAIR) 408A Western Electric used/good 1964-1969 (76/60 and 74/60)
(1 PAIR) 408A Western Electric used/tests like new 1965-1966 (91/60 and 97/60)
