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Re: Then again........

Crikey, FB, I took your question literally!

Internal shielding is a technical talking point with many toobaholics. As an example, consider the multiple variants of the humble 6CG7.....

These M8136s have "a large 'shield' shape with 'mullard' in the middle", as you put it. Most have "CV4003" stamped next to "M8136", a couple only have "M8136" without "CV4003". All have BVA logo as well as "MADE IN GREAT BRITAIN".

Are you suggesting these are likely to be from the 60s or 70s? IYHO which sound better and why? TIA.

spindrifter



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