(!!!!) (Best Value used) ECC83=12AX7 Fisher Mullard ribbed plates used/good 1964 (.8/1.2mA Gm=1400/1600)
(!!!!) (Best Value used) ECC83=12AX7 Fisher Mullard ribbed plates used/good 1964 copper grid posts (.7/.8mA Gm=1400/1500)
(!!!!) (Good Value Pair) 12BH7A GE NOS gray oval plates "o" getter halo 1961-1965 (7.2/6.6ma and 8.4/6.8ma)
(!!!!) (Good Value Single) 6SN7GTB Westinghouse USA black plates "D" getter halo like new 1960 (6.8/7ma)
(!!!!) (Recommended Pair) 6J5GT Raytheon black ribbed plate NOS 1940's (6.4ma and 6.4ma)
(!!!!) (Recommended Pair) 6J5GT Raytheon metal base black ribbed plate NOS 1940's (7.0ma and 7.0ma) (1% matched)
(!!!!) (Recommended Single) 12BH7A Sylvania Hammond gray oval plates "D" getter halo used/like new 1959 (9/9ma)
(!!!!) (Single 1959) ECC82=12AU7 Philips Miniwatt Holland like new low hours/tests like new 1959 (10.6/9.8ma)
(!!!!) (Tungsol Single) JAN-12AY7 Tungsol like new 1960 era (2.9/2.7ma) (same Gm)
(!!!) (BEST OVERALL SINGLE #2) GZ32 Miniwatt Dario France NOS 1956 (63/40 and 63/40) small rattle inside base
(!!!) (BEST OVERALL SINGLE) GZ32 Miniwatt Dario France NOS around 1955 (63/40 and 63/40) small rattle inside base
(!!!) (Best Pair from 1959) EL84 Wien Austria same build and sound as Holland 1959 (38ma and 39ma)
(!!!) (BEST PAIR) JHY-0B2WA CBS NOS 1960 (neon gas) (1 pair)
(!!!) (Best Siemens Pair) EL84 Siemens Halske Germany 1966-1969 (40ma and 42.5ma)
(!!!) (BEST SINGLE #3) GZ32 Miniwatt Dario France NOS around 1955 (62/40 and 62/40) small rattle inside base
(!!!) (Best Single 1958) JTL-5687 Tungsol black plates "U" getter like new 1958 (37.5/41.5ma)
(!!!) (Best Single 1961) ECC82=12AU7 Miniwatt Holland NOS 1961 (9.8/9.2ma)
(!!!) (Best Single 1967) ECC82=12AU7 Philips Holland NOS 1967 (11.2/10.6ma) (same Gm)
(!!!) (Best Single) 5U4GB CBS NOS double "D" getters 1959 (59/40 and 60/40)
