(!!!!) (Best Pair) 6U8A GE NOS 1976-1977 (15.6/15ma and 9/9ma) 1-3% matched
(!!!!) (Best Pair) 6U8A Philips by Sylvania NOS 1986 (17.3/17.6ma and 9.5/9ma)
(!!!!) (Best Telefunken Pair) ECF82=6U8 Telefunken <> bottom NOS 1960's rebranded Sylvania (15ma/8.4ma and 15ma/8.6ma)
(!!!) (Best Single) 6U8A GE NOS 1975 (20ma/13.6ma) (High Ma and Gm)
(!!!) (Best Single) 6U8A RCA black plates NOS 1967 (23.8ma and 11ma)
(!!) (Recommended Single) 6U8A GE NOS 1977 (14.2ma/10ma)
(!!) 6U8=ECF82 Tungsram Hungary rebranded Haltron NOS 1970's (14.3ma and 7.6ma)
(!!) (Best Telefunken) ECF82=6U8 Telefunken Germany <> bottom NOS 1968 (13ma triode and 9.6ma pentode)
(!) (#1 6U8A England single) CV5065=6U8A Thorn AEI England NOS 1966 (18.4ma triode and 10ma pentode) (strong single)
(!) ECF82=6U8 Telefunken <> bottom used/good 1967 (13.4ma triode and 6ma pentode)
(Best Value) 6U8A Rogers Canada NOS 1974 (14.8ma triode and 8ma pentode)
(!!!!) (Recommended Pair) 6U8A GE NOS 1971-1977 (14.8/14.6ma and 11.6/10.6ma)
6678=6U8A GE NOS (3 in stock)
6U8A Raytheon USA NOS Black Plates NOS 1960's
6U8A used/good
6U8A=6678 Dumont NOS 1971 (18.5/10.2ma)
6U8A=6678 Dumont NOS 1971 (19.7/7ma)
7687 Sylvania NOS 1962 (sold out)
(!!!) 6U8A Raytheon black plates NOS "U" getter halo 1962 (17ma and 8ma)
(!!) (Best Telefunken) ECF82=6U8 Telefunken Germany <> bottom NOS 1969 (24ma triode and 9.4ma pentode)
