(!!!) (Best Overall Single) ECC808=6KX8 Telefunken Diamond Bottom NOS 1969-1970 (1.5/1.7ma and Gm=1700/1800) (High Ma and Gm)
(!!!) (Recommended Telefunken Pair) ECC808=6KX8 Telefunken Diamond Bottom NOS 1969-1970 (1.1/1.5ma and 1.2/1.4ma)
(!!!) (~ Recommended Pair ~) ECC808=6KX8 Telefunken Diamond Bottom used/test like new 1969 same date codes 1% matched (matched on Amplitrex)
(!!) (#1 ECC808 Valvo Pair) ECC808=6KX8 Mullard Made in Germany by VALVO NOS 1969 same date codes 1% matched (1.3ma x 4 sections) (matched on Amplitrex)
(!!) (Recommended Telefunken Pair) ECC808=6KX8 Telefunken Diamond Bottom NOS 1969 (1.0/1.0ma and 1.0/1.0ma) 1% matched
(!) (Best Value Single) ECC808=6KX8 Telefunken Diamond Bottom NOS 1969-1970 faded printing from rubbing inside box (.8/.8ma Gm=1500/1500)
(!) (Best Value) ECC808=6KX8 Telefunken Diamond Bottom NOS faded printing from rubbing inside box 1970 (.9/1.0ma Gm=1500/1600)
ECC808=6KX8 Mullard Made in Germany by VALVO NOS 1969 same date codes 1-2% matched (matched on Amplitrex)
ECC808=6KX8 Telefunken Diamond Bottom NOS 1969 (.5/.8ma Gm=1200/1500)
