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    CBS Raytheon 7728

    CBS Raytheon 7728

    The 7728 is a premium low noise 12AT7 with heavy gold plated pins. These were made in the 1960's by both CBS and Raytheon for highly critical industrial applications.  On par with the Valvo E81CC, it is incredibly rare and has an extremely open soundstage.

    $250.00
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  • All prices are per tube

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    CBS Raytheon 7730

    7730=Premium low noise 12au7

    $250.00
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