(!!!!) (BEST PAIR #1) ECC808=6KX8 Telefunken Diamond Bottom NOS 1969 (1.2/1.2ma and 1.3/1.4ma)

1 matched pair) ECC808=6KX8 Telefunken Germany Diamond Bottom NOS same date codes (B4219101=1969)

1 tube) 1.2/1.2ma Gm=1600/1600

1 tube) 1.3/1.4ma Gm=1700/1700

Matched on Amplitrex

Vplate=250V

Vgrid=-1.9V

Good Ma = 0.9-1.0mA+

Good Gm = 1500-1600+

B=Berlin

Tubes were "Factory Sealed "

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