(!!) (BEST VALUE PAIR) ECC808=6KX8 Mullard Made in Germany by VALVO NOS 1969 same date codes (1.1/1.3ma and 1.2/1.1ma) Title: ECC808 Mullard by Valvo

1 matched pair) ECC808=6KX8 Mullard Made in Germany by VALVO NOS ribbed plates 1969

1 tube) 1.1/1.3ma Gm=1500/1800

1 tube) 1.2/1.1ma Gm=1700/1600

Matched on Amplitrex

Vplate=250V

Vgrid=-1.9V

Good Ma = 1.2ma

Good Gm = 1600

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