(!!!) (Best Single) ECC808=6KX8 Telefunken Diamond Bottom NOS 1968 (1.6/1.4ma Gm=1800/1700)

ECC808=6KX8 Telefunken Diamond Bottom <> NOS 1968 from factory sealed box

1 section) 1.6ma Gm=1800

1 section) 1.4ma Gm=1700

Vplate=250V

Vgrid=-1.9V

Good Ma = 0.8-1.0mA+

Good Gm = 1400-1600

B=Berlin

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