Beijing Valve Factory / ECC83/12AX7WA -BEIJING NOS

ECC83/12AX7WA -BEIJING NOS Click on image(s) above to view larger
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NOS Chinese Military 6N4-J 12AX7WA Square Getter, Made in Beijing


This 12AX7WA is a military grade 6N4-J (the "J" means Jun Dui, which is Chinese for "army"). has all the original Factory marking and date from the late 1980ís and are true new old stock item.

6N4-J was the highest grade Chinese 12AX7 and was made in the Beijing factory for the army. These were produced from the 1970s to early 1990s, when the Beijing factory closed. These Beijing 12AX7 had a number of special design feature not used in other 12AX7. The valves used triple mica spacers as this made the valve rugged and vibration resistant. The 6N4-J used a distinctive Foil dimpled square cup getter with double support. This gave the valve a consistent vacuum when the valve was degassed in the manufacturing process.

The most important aspect is that this valve sounded fantastic, it was superbly balanced, warm and very musical sounding. In clean mode the valve does not add any colour to the sound it gives you the sound that you put in. This clarity is why Fender used this valve as their standard 12AX7 up until the Beijing factory closed.

It is the valves distorted and overdriven sound that has made this valve very sought with guitarists and used by all the top amplifier brands in the world.

The valve is easily overdriven and produces a warm rounded musical crunch. It has none of the fizz and top end harness or the muffled mid band that plagues the current production 12AX7 valves that are made in China today. The 6N4-J has all the punch and crunch with fat musical warmth which is why Marshall Mesa Boogie, Peavey and Vox bought these and used them in all their production until the factory closed.

These are a great sounding ECC83/12AX7 and are in many guitarists opinion the reason why their Marshall, Mesa Boogie or Fender has never sounded the same since.

We have a limited stock of these great sounding, rare and in expensive ECC83/12AX7 WA

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