The Dynaco Tube Audio Forum

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


    ST 70 function

    Share

    polarflux

    Posts : 40
    Join date : 2010-02-12

    ST 70 function

    Post by polarflux on Fri Feb 12, 2010 3:06 pm

    Hi

    Does anyone know where to find a detailed explanation how each component an ST 70 functions. Or, perhaps even a generalized discussion of tube amplification. I know this is a big question.

    Thanks

    Phil

    Bob Latino
    Admin

    Posts : 2411
    Join date : 2008-11-26
    Location : Massachusetts

    Re: ST 70 function

    Post by Bob Latino on Fri Feb 12, 2010 6:22 pm

    Hi Phil and welcome to the forum,

    You can probably find out a lot of information online if you just Google "tube amplifier design" or "tube amplifier theory". One of the best books out there that I have read is "Audio Reality" by Bruce Rozenblit. I didn't buy the book but I did find it at a local library and checked it out for a week. Bruce also has the book available for download (for $20!) on his web site here > Audio Reality book

    Bob

    polarflux

    Posts : 40
    Join date : 2010-02-12

    Re: ST 70 function

    Post by polarflux on Fri Feb 12, 2010 6:35 pm

    Hey, thanks for the info. Yeah, I know of that book through looking at the Transcendent Audio site, but I was not aware there was any discussion of tube audio engineering in the book. I see if I can locate a copy.

    I heard you are a fan of the grounded grid preamp. What do you think of it? I have had my eye on that particular kit for sometime.

    Thanks

    Phil

    Bob Latino
    Admin

    Posts : 2411
    Join date : 2008-11-26
    Location : Massachusetts

    Re: ST 70 function

    Post by Bob Latino on Fri Feb 12, 2010 6:54 pm

    polarflux wrote:Hey, thanks for the info. Yeah, I know of that book through looking at the Transcendent Audio site, but I was not aware there was any discussion of tube audio engineering in the book. I see if I can locate a copy.

    I heard you are a fan of the grounded grid preamp. What do you think of it? I have had my eye on that particular kit for sometime.

    Thanks

    Phil

    Hi Phil,

    I was a fan of the Transcendent Grounded Grid preamp ($499 in kit form) but the new tubes4hifi SP-8SE (Special Edition) preamp has more features like gain/balance controls, a stepped attenuator built in, a much larger power transformer and a phono input. None of these are found on the Transcendent Grounded Grid preamp. The tubes4hifi SP8-SE (IMHO) also sounds better. Cleaner sound with better bass. You can add the stepped attenuator to the Transcendent preamp but that brings the price up to about $640. The tubes4hifi preamp SP8-SE does cost a little more ($799) but the extra features and the increased sound quality IMHO are worth it. Link and comparision interior photos of both preamps. The Transcendent preamp is shown with its optional +$140(!) stepped attenuator.

    Tubes4hifi preamp page

    Transcendent preamp below ...



    Tubes4hifi SP8-SE preamp below ...



    Bob

    Sponsored content

    Re: ST 70 function

    Post by Sponsored content Today at 6:13 pm


      Current date/time is Wed Dec 07, 2016 6:13 pm