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The last word in rich, full-bodied guitar tone! - Vintage, high voltage, vacuum tube technology harnessed to create unique and exceptional effects pedals.

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Signal Tubes

This excellent detailed drawing is taken from the 1950 edition of the RCA Receiving Tube Manual which clearly shows the internal construction of a B9A miniature signal tube. You can download a copy of the complete Receiving Tube Manual as a pdf further down this page. The size is 14MB.

Internal structure of a vacuum tube