(!!!!) (~ Best Overall Sound ~) ECF82=6U8 Telefunken <> bottom NOS original boxes 1969 (recommended pair)
(!!!) (Best British Sound) CV5065=6U8 Ediswan England BLACK PLATES and "D" getter halo NOS 1955 glass dirty from storage
(!!!) (~ Best Pair ~) GB-1252=6U8A Sylvania Gold Brand NOS 1960's
(!!!) (~ Best Pair ~) GB-1252=6U8A Sylvania Gold Brand NOS 1960's (Highest Ma and Gm)
(!!) (#1B 6U8A Value Pair) JAN-6U8A GE NOS 1970's
(!!) (~ Good Value ~) 6U8A GE NOS 1960's (12 in stock)
(!!) (~ Recommended Pair ~) 6U8A GE NOS 1960's
(!) (#1 6U8 Best Value) ECF82=6U8 Telefunken <> bottom NOS 1960's (Pentode 65% and Triode 100%)
(!) (#1 6U8 Best Value) ECF82=6U8 Telefunken <> bottom used/like new 1960's
(!) (#1 6U8 Single) ECF82=6U8 Telefunken <> bottom NOS 1964
(!) (#1 6U8A England single) CV5065=6U8A Thorn AEI England NOS 1966 (10ma and 18.4ma)
(!) (~ Best British 6U8 ~) CV5065=6U8 Ediswan England BLACK PLATES and "D" getter halo NOS 1955 (very good single)
(!) 6U8A Raytheon black plates "O" getter halo 1962 same date codes (1 Pair)
(!) ECF82=6U8 Telefunken <> bottom used/good 1967
6678 (see 6U8)
6U8=ECF82=CV5065 Siemens Germany NOS 1969-1970
6U8A Raytheon USA NOS 1962 (single)
6U8A Raytheon USA NOS Black Plates NOS 1960's
6U8A Rogers Canada NOS 1974 (8ma and 14.8ma)
