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(!!) (Best Holland Pair) 6LF6 Amperex Heerlen Holland Big Bottle NOS 1967-1968 (134ma and 135ma) (Counterpoint OTL, Futterman OTL, Prodigy OTL)

By Tube World

$ 199.99

1 pair) 6LF6 Amperex Heerlen Holland Big Bottle NOS 1967-1968 

1 tube) 134ma and Gm=15,000 (1968)

1 tube) 135ma and Gm=14,700 in Philips box (1967)

 

  

Tested on Amplitrex 

Vplate=175V

Vscreen=125V

Vgrid=-25V

NOS Iplate range 100-150ma

NOS Gm range 13,000 - 15,000

 

(6LF6=6.3V @ 2A Filament, Vplate=990Vmax, Vplate=8000Vpeak-pulse, 40 watts)
 


- Futterman OTL

- Prodigy OTL

- Counterpoint SA4 OTL

See more: vacuum tube
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