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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


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    VTA ST120 and Infinity Kappa 7's

    thevic24
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    thevic24


    Posts : 34
    Join date : 2010-01-31
    • Post n°1

    VTA ST120 and Infinity Kappa 7's Empty VTA ST120 and Infinity Kappa 7's

    Post by thevic24 Fri Jan 21, 2022 11:37 am

    What are your thoughts on driving a set of infinity kappa 7's with the ST120?
    I'm currently running KT88's and am thinking about going to KT120's
    I do run the KT88's kinda hot with a bias of .55 to .60.
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    corndog71
    corndog71
    corndog71


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    Join date : 2013-03-19
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    • Post n°2

    VTA ST120 and Infinity Kappa 7's Empty Re: VTA ST120 and Infinity Kappa 7's

    Post by corndog71 Fri Jan 21, 2022 12:01 pm

    Why do you run them hotter? Tubes can last a lot longer and still sound good at 0.40 volts.

    thevic24 and Dave_in_Va like this post

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    thevic24
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    thevic24


    Posts : 34
    Join date : 2010-01-31
    • Post n°3

    VTA ST120 and Infinity Kappa 7's Empty Re: VTA ST120 and Infinity Kappa 7's

    Post by thevic24 Fri Jan 21, 2022 12:40 pm

    They seem to sound much better to me this way in the rig I've been using it in. My last set of tubes, EH6550's, lasted 4 years at about 4000 hours set like this. Obviously this is by my ear but it seems to give me what in looking for.
    😎
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    VTA ST120 and Infinity Kappa 7's Empty Re: VTA ST120 and Infinity Kappa 7's

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