(!!) (Best Single) ECC808=6KX8 Mullard Made in Germany by VALVO NOS 1969 (2.1/2.2ma)

ECC808=6KX8 Mullard Made in Germany by VALVO NOS ribbed plates 1969 

2.1ma Gm=1900

2.2ma Gm=2000

Tested on Amplitrex

Vplate=250V

Vgrid=-1.9V

Good Ma = 1.0-1.2ma

Good Gm = 1500-1600

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

- HOHNER Orgaphon 60MH 1966