EL84 Genuine GEC N709 super rare welded plate Square getter EL84 6BQ5 made by the Marconi Osram GEC Ltd.
GEC N709 with welded plate £ 500 quartet
Description
Our saga of all EL84 cannot be completed withput the best EL84 ever made and we refer to the GEC N709 with welded plate and square getter.
A stunning valve!
The N709 is in the miniature all-glass range having a single-ended construction and a B9A noval base.
With the maximum anode dissipation rating of 12 watts and a mutual conductance of over 11 mA/V a signal of very small amplitude is sufficient for full drive an amplifier. The GEC N709 has been designed to satisfy demands in high fidelity in amplifier or receiver operation. To meet the requirements for high fidelity it is desirable to increase the available audio output power from the amplifier and hence decrease the distortion present at a given output, this is what the EL84 does.
This section shows various type of UK made EL84 and N709
The GEC N709 shown here are by far the rarest and the best N709 ever made when production started in the early 1950s.
They all have square getter
The plate of the N709 is welded pleadse refer to pictures
Holy Grail of audio valves
The GEC N709 you see here have been tested at 6.3 Volts filament with both Anode and Screen at 250 Volts and negative grid of 7.3.
GEC N709 have been tested with AVO 163 with current of : 49mA; 47.5mA; 48.5mA; 49mA matched quartet 100% emission
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