(!!!!) (Best Pair) 6U8A GE NOS 1960's
(!!!!) (Best Pair) 6U8A GE NOS 1960's 1% matched
(!!!!) (Best Pair) JAN-6U8A GE NOS 1970's
(!!!!) (Best Pair) JAN-6U8A GE NOS 1970's 1-2% matched
(!!!!) (Best Single) GB-1252=6U8A Sylvania Gold Brand NOS 1970 (Premium 6U8A) (18.6/10.2ma)
(!!!!) (Best Sounding Single) ECF82=6U8 Telefunken <> bottom NOS 1964 (19.6ma/10ma)
(!!!) (Best Raytheon Single) 6U8A Raytheon USA NOS "O" getter halo 1962 (16.6ma and 9.4ma)
(!!!) (Best Single) 6U8A Raytheon USA black plates "O" getter NOS 1960's (20.4ma and 9.5ma)
(!!) (Best British 6U8) CV5065=6U8 Ediswan England BLACK PLATES and "D" getter halo NOS 1955 (very good single)
(!!) (Recommended Single) 6U8A GE NOS 1968 (14.5ma/12ma)
(!!) (Recommended Single) 6U8A GE NOS 1975 (20ma/13.6ma) (High Ma and Gm)
(!!) (Recommended Single) 6U8A Raytheon USA black plates "U" getter NOS 1962 (17.2ma and 8.0ma)
(!!) CV5065=6U8 Ediswan England BLACK PLATES and "D" getter halo NOS 1955 (13ma/10ma)
(!) (#1 6U8 Best Value) ECF82=6U8 Telefunken <> bottom NOS 1960's (Pentode 65% and Triode 100%)
(!) (#1 6U8A England single) CV5065=6U8A Thorn AEI England NOS 1966 (10ma and 18.4ma)
(!) ECF82=6U8 Telefunken <> bottom used/good 1967
6678 (see 6U8)
6U8A Raytheon USA NOS Black Plates NOS 1960's
6U8A Rogers Canada NOS 1974 (8ma and 14.8ma)
6U8A used/good
