(!!!!) (BEST SINGLE) 5U4GB Raytheon "O" getter NOS 1962 (57/40 and 57/40) 1% diode balance
(!!!!) (Best Single) 6106 Bendix rebranded 5Y3WGTA Heintz & Kaufman NOS (63/40 and 64/40)
(!!!!) (Best Single) 6X5GT Philips Miniwatt Australia NOS 1940's (53/40 and 53/40)
(!!!!) (Best Single) 83 GE NOS 1959 (65/40 and 65/40)
(!!!!) (Best Single) EZ81 GE Mullard Blackburn UK "O" getter NOS 1966 (57/40 and 57/40)
(!!!!) (Best Single) EZ81 Mullard Blackburn UK NOS branded Motorola "D" getter 1960 (57/40 and 58/40)
(!!!!) (Best Single) EZ81=6CA4 Philips Australia NOS 1974 (58/40 and 58/40) (similar sound to EZ81 Holland) 1% section balance
(!!!!) (Best Sounding Pair) 5Y3GT RCA Motorola NOS 1960 (56-61/40 and 56-62/40)
(!!!!) (Best Sylvania Pair) 6X5GT Sylvania NOS 1951 (50-53/40 and 52-53/40)
(!!!!) (Best Value Pair) 5U4GB RCA used/low hours like new 1974 (59-60/40 and 59-61/40)
(!!!!) (Best Value Quad) EZ81=6CA4 RFT East Germany (Funkwerk) NOS 1970's (1 quad)
(!!!!) (Best Value Single) 5U4G CBS used/tests like new "D" getter 1950 era (55/40 and 60/40)
(!!!!) (BEST VALUE SINGLE) 5U4G TUNGSOL NOS 1952 slightly tilted glass (52/40 and 52/40)
(!!!!) (BEST VALUE SINGLE) 5U4GB Raytheon "O" getter NOS 1962 (58/40 and 60/40) (2 in stock)
(!!!!) (Best Value Single) 5U4GB RCA Super Airline NOS 1960 era (58/40 and 60/40)
(!!!!) (Best Value Single) 6X5GT Philips Miniwatt Australia NOS 1940's (49/40 and 50/40)
(!!!!) (Best Value Single) JAN-CHY-5U4G CBS used/very good "D" getter 1946 (53/40 and 53/40) 1% section balance
(!!!!) (Best Value Single) USAF-5U4G RCA used/good "D" getter 1959 (52/40 and 57/40)
(!!!!) (READ REVIEW) 6106 Bendix rebranded 5Y3WGTA Heintz & Kaufman NOS (67/40 and 70/40)
(!!!!) (READ REVIEW) GB-5931 Sylvania brown base gold brand 1960's (60/40 and 65/40)
