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The Dynaco Tube Audio Forum

Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Tubes4hifi VTA tube amp and preamp kits and all Dynakitparts.com products


2 posters

    6U8A instead of 7199

    hrudu90
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    hrudu90


    Posts : 28
    Join date : 2011-01-02
    • Post n°1

    6U8A instead of 7199 Empty 6U8A instead of 7199

    Post by hrudu90 Sat Jul 06, 2019 4:10 pm

    Anyone using 6U8A in their original ST70? How is it?
    It is just time foe me to look for a pair 7199 or 6U8A.

    Please help.

    I do have a VTA ST70 too for rock and pop music and the original ST70 for jazz.



    Thank you
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    peterh
    peterh
    peterh


    Posts : 1869
    Join date : 2012-12-25
    Location : gothenburg, sweden
    • Post n°2

    6U8A instead of 7199 Empty Re: 6U8A instead of 7199

    Post by peterh Sat Jul 06, 2019 4:17 pm

    hrudu90 wrote:Anyone using 6U8A in their original ST70? How is it?
    It is just time foe me to look for a pair 7199 or 6U8A.

    Please help.

    I do have a VTA ST70 too for rock and pop music and the original ST70 for jazz.



    Thank you
    It does not answer your question, but i recently installed adapters and GB-1252 ( a 6U8 tube) in a sca35 with good results.
    I even have a spreadsheet with key figures for some dfferent tubes, unfortently in swedish but i think you intelligent readers can get a grip of the meaning :-) :
    http://n.manet.nu/tubedoc/sca35-7199-alternative.pdf
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