(!!!) (Best Overall Pair) ECC808=6KX8 Telefunken Diamond Bottom NOS 1962 (1.3/1.3ma and 1.4/1.3ma)

1 matched pair) ECC808=6KX8 Telefunken Diamond Bottom NOS 1962 from sealed boxes

1 tube) 1.3/1.3ma Gm=1500/1500

1 tube) 1.4/1.3ma Gm=1600/1600

Matched on Amplitrex

Vplate=250V

Vgrid=-1.9V

Good Ma = 0.8 – 1.0ma+

Good Gm = 1400-1500

B=Berlin

Tubes were “”Factory Sealed “”

(5 are used in the 4 Channel Echolette PA amp made in Germany)