FOR SALE

   2x Telefunken EF804 Pentode Audio Frequency Tubes

• Octal K8A

• Halo getter 

• Grey plates

• NOS / NIB Tubes

• Ulm factory, Germany, 

• Same date code: U1302106 (1962)

• Diamond logo at bottom

• The Telefunken EF804 tube is a special quality low noise tube. Telefunken made this tube for the professional audio/recording industry where it was used in microphones and mic preamps such as the V72.

• Tested on AVO 160 with:

• Uf: 6.3V~

• Ua: 250 V~

• Ug1: -2V

• Ug2: 150 V~

• Results: Ia =  5.5 / 6.0 mA (3 = 100%)

•                 S =  2.8 / 2.8 mA/V (2 = 100%)

• All our tubes are tested for shorts and gas leak.

  Feel free to visit my store ‘yourtubes’ for more vintage tubes

• Items will be carefully packed to ensure save arrival.

• Thank you for checking the other listings.

• We ship usually within one day after payment.