(!!!!) (Best Value 1965) 12AX7 Philips Miniwatt Holland like new 1965 (Gm=2000/2000 and 1.6/1.7ma) (Highest mA and Gm)
(!!!!) (Best Value Pair) 6B4G Raytheon NOS 1940's separate plates, 1 branded Philco (90ma and 91.5ma)
(!!!!) (Best Value Single) 6550 Tungsol branded Sylvania smooth gray plate used/tests like new 1960 era (138ma)
(!!!!) (Best Value Single) ECC803S=12AX7 Telefunken Ulm Germany <> bottom NOS 1961 1-2% section balance (Gm=1550/1600) (1.1/1.1ma)
(!!!!) (Good Value Single) 6L6GC Seeburg by RCA black plate used/good 1961 (66ma)
(!!!!) (Good Value) JG-12AY7 GE box plates like new 1953 (3.3/2.5ma)
(!!!!) (Pair) 6B4G Raytheon NOS 1940's - 1 tube branded Tungsol - same build - separate plates (100ma and 109ma)
(!!!!) (Pair) 6B4G Raytheon NOS 1940's - 1 tube branded Tungsol - same build - separate plates (82ma and 83ma)
(!!!!) (Pair) 6B4G Raytheon NOS 1940's - 1 tube branded Tungsol - same build - separate plates (86ma and 92ma)
(!!!!) (Recommended Pair) 6BQ5 RCA NOS 1960's (50.5ma and 48.2ma)
(!!!!) (Recommended Pair) 6C4C=6B4G Russian NOS 1958-1967 (79ma and 85ma) (one of the best sounding 6B4G ever made)
(!!!!) (Recommended Pair) 8D8=EF86 Brimar UK quad mica NOS 1961 (3.1ma and 3.2ma) 1-2% matched
(!!!!) (Recommended Single 1953) 12BH7 Sylvania black oval plates "square=D" getter halo NOS 1953 reboxed (11.2/15.2ma)
(!!!!) (Recommended Single) 12BH7A Sylvania gray oval plates "O" getter halo NOS 1962 (10.2/11.8ma)
(!!!!) (Recommended Single) 12BH7A Sylvania Hammond gray oval plates "D" getter halo used/like new 1959 (10.2/10.6ma)
(!!!!) (Recommended Single) 12BH7A Sylvania Hammond gray oval plates "D" getter halo used/like new 1959 (9/9ma)
(!!!!) (Single) 6DJ8 Philips Miniwatt Holland used/tests like new 1961 (14.0/14.5ma) (similar sonically to Bugle Boy)
(!!!) (Best GE Single) 6EU7 GE NOS pinched gray plates 1975 (56/32 and 58/32)
(!!!) (Best Pair) 5881 Tungsol rebranded Sylvania and GE 1960 era used/test like new (77.3ma and 74.5ma) (close Gm)
(!!!) (Best Pair) 6BM8=ECL82 Philips Holland made in Belgium NOS 1969 (1.8ma/31ma and 1.9/30ma) 1-2% matched
