The Dynaco Tube Audio Forum

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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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    I hope to gain an answer

    polarflux
    polarflux
    polarflux


    Posts : 49
    Join date : 2010-02-12
    Location : Alaska
    • Post n°1

    I hope to gain an answer Empty I hope to gain an answer

    Post by polarflux Fri May 02, 2014 8:10 pm

    Would an ST120 exert more control over a speaker or just play louder compared with an VTA ST70? You know what this really means!
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    Bob Latino
    Bob Latino
    Bob Latino
    Admin


    Posts : 3277
    Join date : 2008-11-26
    Location : Massachusetts
    • Post n°2

    I hope to gain an answer Empty Re: I hope to gain an answer

    Post by Bob Latino Fri May 02, 2014 8:38 pm

    Both amps have very good control over any speaker they are used with. The bass is not boomy or uncontrolled with either amp. The control would be the same and distortion levels are also pretty much the same from the VTA ST-70 or VTA ST-120. The ST-120 has a 3 dB headroom advantage over the ST-70. To answer your question more directly > The ST-120 will play louder than the 70 and but does not really offer any more bass control. There are also subtle differences between the EL34 output tubes that the ST-70 uses and the KT88 output tubes that the ST-120 uses. Of course you can also use use KT88 output tubes in the VTA ST-70 which would really minimize any sound differences between the two amps other than the 3 dB of power advantage of the ST-120.

    Bob
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