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Questions about tubes and gear that glows. FAQ

Wiki is your friend.

Having owned several 300 series Ampex's in the past, yes, you are correct ... there are plenty of 6SN7's inside.

But, the 6SN7 originated in 1939 as a Television vertical-deflection amplifier, which was 10 years before the Ampex 300 was introduced.

It just so happens to work well in audio circuits, too.


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  • Wiki is your friend. - Jack Seaton 14:04:07 02/11/07 (0)


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