(!!!!) (Recommended Pair) EL84 Telefunken Germany <> bottom NOS 1963-1966 (68ma and 69.5ma) (recommended for FIXED-BIAS amp only due to high current)

1 pair) EL84 Telefunken Germany &lt;&gt; bottom NOS 1960's (recommended for FIXED-BIAS amp (where you can adjust the bias) 1 tube) 69.5ma Gm=12,900 (66-08=1966) 1 tube) 68.0ma Gm=12,600 (B5203308=1963)   MATCHED ON AMPLITREX AT1000 Vplate=325V Screen=250V Vgrid=-7.7V Good NOS range 40-48ma Good Gm range 10,000-11,000 Recommended for Klangfilm ASL OTL headamp Leben CS-300 Grommes PHI-26M Two Rock