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(!) (Best Single) 2X2 National Union NOS 1950 era (59/40)
(!) (Best Single) 37 GE ribbed plate NOS 1943 (8.0ma)
(!) (Best Single) 50C5 GE black plate NOS 1963 (86/60)
(!) (Best Single) 57 Hytron NOS 1940's (50/31)
(!) (Best Single) 5726=6AL5W Raytheon NOS 1960's (50/40 and 50/40)
(!) (Best Single) 6111 France NOS 1962 (7.0/7.4ma) (close triode balance)
(!) (BEST SINGLE) 6BA6 Brimar England NOS 1960's (10.8ma)
(!) (Best Single) 6BE6 GE NOS 1960 (1.5ma)
(!) (BEST SINGLE) 6BE6 RCA NOS 1970's (2.0ma Gm=1000)
(!) (BEST SINGLE) 6BE6 TEN Japan NOS 1960's (1.5ma Gm=900)
(!) (Best Single) 6BR8A RCA NOS 1959 (16.6/10.8ma)
(!) (BEST SINGLE) 6DQ5 Sylvania NOS 1960's (135ma)
(!) (Best Single) 6DQ6B RCA NOS 1970's (120ma)
(!) (Best Single) 6GK5=6FQ5A RCA NOS 1960's (13.6ma)
(!) (Best Single) 6GK5=6FQ5A Sylvania branded Raytheon NOS (15.2ma)
(!) (BEST SINGLE) 6HF5 Sylvania NOS 1970 era (117.5ma)
(!) (Best Single) 6J7G Continental NOS 1940's (2.5ma)
(!) (BEST SINGLE) 6JB6 Sylvania branded RCA NOS 1970's (81ma)
(!) (BEST SINGLE) 6JB6A RCA NOS 1970 era (100ma)
(!) (Best Single) 6JT6A Sylvania tipped top NOS 1970 era (93ma)
