(!!!!) (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)
(!!!!) (Good Value Pair) 6SN7GTB Sylvania chrome top like new 1950's (8.0/9.1ma and 8.0/9.2ma) (Schiit Freya, Rogue, Modwright OPPO)
(!!!!) (Good Value Pair) 8SN7GTB Sylvania GM Delco "chrome top" NOS 1957 same build (6.4/7.2ma and 7.4/6.2ma) (Schiit Freya, Rogue, Modwright OPPO, Cary) (1-5% matched)
(!!!!) (Good Value Single) ECC83=12AX7 Amperex Bugle Boy Holland "long plates" and "D" getter used/good 1958 (1.1/1.1ma and Gm=1350/1350) 1% section balance
(!!!!) (Holland single 1958) ECC83=12AX7 Triotron Holland "long plates" with "D" getter halo like new 1957 (1.1/1.2ma and Gm=1700/1700)
(!!!!) (PAIR) 5751 Hitachi Japan glossy black ribbed plates triple mica double D getters 1960's (2.0/2.2ma and 1.8/2.2ma) (rare)
(!!!!) (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)
(!!!!) (READ REVIEW) 6106 Bendix rebranded 5Y3WGTA Heintz & Kaufman NOS (67/40 and 70/40)
(!!!!) (Recommended 6106) 6106 Bendix rebranded 5Y3WGTA Heintz & Kaufman NOS (67/40 and 68/40)
(!!!!) (Recommended Mullard Single) 6DJ8 RCA Mullard NOS "A" Frame getter halo 1976 (10.6/12.6ma)
(!!!!) (Recommended Pair) 5751 RCA black plates low hours/test like new 1961-1962 (2.5/2.5ma and 2.7/2.4ma) (Best Audio Grade 5751) (same Gm)
(!!!!) (Recommended PAIR) 5U4GB Raytheon NOS "O" getters 1962 (58-60/40 x 2 tubes)
(!!!!) (Recommended Pair) 5U4GB RCA NOS and like new 1962 (56-58/40 and 56-58/40)
(!!!!) (Recommended Pair) 5V4G National Union NOS 1951 same date codes (58-59/40 and 57-58/40 x 2 tubes) 1-3% matched
(!!!!) (Recommended Pair) 6C4C=6B4G Russian NOS 1958-1967 (79ma and 85ma) (one of the best sounding 6B4G ever made)
(!!!!) (Recommended Pair) 6SL7GT Sylvania short bottle chrome top NOS 1953-1954 (2.5/2.4ma and 2.5/2.7ma)
(!!!!) (Recommended Pair) 6V6GT RCA black plate coated glass like new 1940's and NOS 1954 (49ma and 46ma)
