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  • The driver tube is a choke loaded 826 tube capacitor coupled to the grid of the GM70.

    audiobuzz 2 months ago

  • I can smell a tube about to burn out

    Rikk303 2 months ago

  • What type is the driver tube? Very nice! My amp chain is E88CC->6S19P->GM70 direct coupling :) My rectifiers are two 4Q025.

    klemo86 11 months ago

  • What type is the driver tube? Very nice! My amp chain is E88CC->6S19P->GM70 direct coupling :)

    klemo86 11 months ago

  • what are the drivers driving the gm70 ?

    anyway pretty damn impressive .

    florickwar2 1 year ago

  • @florickwar2 Looks like an Eimac tube

    GlennnD 1 year ago

  • UNBELIEVABLE AWESOME ; )

    Shurbovi 2 years ago

  • eva cassidy is singing.

    Blue tubes are 866a mercury vapor tubes. Check eBay.

    richardu47 2 years ago

  • nice singing - who is it ?

    where getting blue tubes from ?

    MYTUBEISAPUSSY 2 years ago

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