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(!!!) (Best Pair) 5U4GB Sylvania NOS 1960's (59-62/40 and 60-62/40)
(!!!) (Best Pair) 6AQ5A RCA black plate NOS 1966-1967 (48.5ma and 48ma)
(!!!) (Best Pair) 6FQ7 GE NOS 1970's (9.8/8.8ma and 8.5/9.6ma) (close Gm)
(!!!) (Best RCA Pair) 6BQ5 RCA NOS 1960's - 1970 (55ma and 58.5ma)
(!!!) (Best Single from 1951) 12SN7GT GE parallel black ribbed plates 1951 (7.6/8.4ma)
(!!!) (Best Single) 12AU7A RCA clear top NOS 1964 (8.4/8.6ma) (same Gm)
(!!!) (Best Single) 12AX7A Sylvania NOS 1970's (Gm=2800/2900)
(!!!) (Best Single) 5751 GE 5 Star NOS 1974 (2.9/2.8ma) 1-2% section balance
(!!!) (Best Single) 5751 GE 5 Star NOS 1975 (2.4/2.4ma) 1% section balance
(!!!) (Best Single) 6AN8 RCA branded Raytheon "D" getter gray plates NOS 1960 era (16.5/15.5ma)
(!!!) (Best Single) EZ81=6CA4 RFT East Germany NOS 1970's (49/40 and 49/40)
(!!!) (Best Single) EZ81=6CA4 RFT East Germany NOS 1970's (49/40 and 50/40)
(!!!) (Best Single) EZ81=6CA4 RFT East Germany NOS 1970's (50/40 and 50/40)
(!!!) (Best Single) JAN-6X4WA Sylvania NOS 1978 (56/40 and 56/40)
(!!!) (Best Sylvania Single) 8417 Sylvania NOS branded Westinghouse NOS 1973 (113mA)
(!!!) (Best Value PAIR) 6GH8A Lindal Hitachi Japan NOS 1970's (10.8/13.8ma and 10.8/13.8ma) 1-3% matched
(!!!) (Best Value PAIR) 6GH8A Lindal Hitachi Japan NOS 1970's (10/11.6ma and 11.5/10.5ma)
(!!!) (BEST VALUE PAIR) 6X5GT GE coin-base NOS 1970's (50-50/40 and 51-52/40)
(!!!) (Best Value Pair) GZ34 Raytheon Japan by Matsushita NOS similar sound and build to Mullard NOS 1970's (60-60/40 x 2 tubes) 1% matched (LS300, Dynaco, Latino, Scott, Marshall, Fender, Cary)
(!!!) (BEST VALUE PAIR) PCC88=7DJ8 RFT East Germany branded Tesla NOS 1980 era (14/12.5ma and 12.4/15ma)