(!!!!) (Recommended Mullard 1960) 12AX7 Mullard BVA British Made box plates NOS 1960 (1.0/1.0ma and Gm=1600/1500)
(!!!!) (Recommended Pair) 12AX7=ECC83 Mullard England ribbed plates NOS 1966-1970 (163 Series) (1.1/1.0ma and 0.9/1.0ma)
(!!!!) (Recommended Pair) 6V6GTA GE NOS 1960's - 1970 (38ma and 40ma) (Fender, Two Rock, Victoria)
(!!!!) (Recommended RCA Single) 6V6G RCA branded Haltron coated glass NOS 1940's (42ma)
(!!!!) (Recommended RCA Single) JAN-CRC-6V6GT RCA black plate coated glass like new 1940's (49ma)
(!!!!) (Recommended Single) 6V6G Sylvania branded Haltron coated glass NOS 1940's (50ma)
(!!!!) (Slightly microphonic single) 12AX7=ECC83 Mullard UK branded Philips ribbed plates NOS 1962 (161 Series) (1.0/1.2ma and Gm=1600/1650)
(!!!!) 6V6G Mullard branded Haltron England NOS gray coated glass 1940's (45.5ma)
(!!!) (Best 12AT7WC Single) JAN-12AT7WC Sylvania black plates NOS 1978 (9/10ma)
(!!!) (Best Matched Quad) 5Y3GT Philips Holland NOS 1960's (1 set of 4)
(!!!) (Best Overall Pair) 6SC7 GE metal can NOS 1970's (1.9/1.9ma and 1.9/1.8ma) 1-2% matched
(!!!) (Best Overall Pair) 6V6GTA Tungsol black plate NOS around 1960 (54ma and 56ma)
(!!!) (Best Single) 12AX7A RCA gray ribbed plates NOS 1966 (1.0/1.0ma and Gm=1500/1500) 1% section balance
(!!!) (Best Single) 6V6G GEC UK branded Haltron NOS coated glass NOS 1940's (49ma)
(!!!) (Best Value Single) 12AX7=ECC83 Mullard UK ribbed plates used/good 1967 (1.7/0.8ma and Gm=2000/1600) (V1 guitar amp)
(!!!) (Best Value Single) 6201=12AT7 GE Hewlett Packard NOS 1968 (8.2/9.6ma)
(!!!) (Good Value Pair) 6SC7 GE metal can NOS 1977 (1.6/1.9ma and 1.6/1.9ma) 1% matched
(!!!) (Good Value) 12AX7A RCA gray ribbed plates "O" getter halo NOS 1973 (1.0/0.9mA and Gm=1400/1550)
(!!!) (Good Value) 12AX7A RCA gray ribbed plates "O" getter halo NOS 1974 (0.8/1.0mA and Gm=1350/1550) (Fender, McIntosh)
(!!!) (Recommended Pair) 12AT7 RCA gray plates NOS 1960's (7.2/8.0ma and 8.0/8.2ma)