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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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    SP12 preamp revisited

    Roy Mottram
    Roy Mottram
    Admin


    Posts : 1839
    Join date : 2008-11-30

    SP12 preamp revisited Empty SP12 preamp revisited

    Post by Roy Mottram Sat Apr 13, 2019 7:40 pm

    Six years ago the SP12 was the top selling preamp in the Tubes4HiFi (VTA) product line, almost every person buying a VTA amp was buying the SP12.
    But 7 years ago the SP12 got a big brother, the SP14, and in the past 5 years or so the SP12 has almost been forgotten by buyers, as buyers were
    no longer looking for a "budget" tube preamp, but the very best tube preamp kit available, the SP14.   Maybe 100 SP12s were sold in 4-5 years.
    During the past 5-6 years well over 700 SP14s have been sold, more than 7x as many.


    Last edited by tubes4hifi on Sat Nov 13, 2021 8:42 pm; edited 2 times in total
    Roy Mottram
    Roy Mottram
    Admin


    Posts : 1839
    Join date : 2008-11-30

    SP12 preamp revisited Empty Re: SP12 preamp revisited

    Post by Roy Mottram Sat Sep 04, 2021 5:42 pm

    as of Sept 1 2021 SP12 is discontinued due to lack of interest, everyone wants the SP14
    DavidR
    DavidR


    Posts : 158
    Join date : 2017-08-10
    Location : MetroWest, MA

    SP12 preamp revisited Empty Re: SP12 preamp revisited

    Post by DavidR Sun Jun 09, 2024 7:17 pm

    Lost the info on my SP12. Looks like it was deleted here.
    Forgot what the first set and the second set of tubes do.
    i.e. Gain, Buffer, SQ, etc,
    Roy Mottram
    Roy Mottram
    Admin


    Posts : 1839
    Join date : 2008-11-30

    SP12 preamp revisited Empty Re: SP12 preamp revisited

    Post by Roy Mottram Tue Jun 11, 2024 2:11 pm

    from the input side, input gain
    from the output side, output buffers

    DavidR likes this post

    DavidR
    DavidR


    Posts : 158
    Join date : 2017-08-10
    Location : MetroWest, MA

    SP12 preamp revisited Empty Re: SP12 preamp revisited

    Post by DavidR Fri Jun 14, 2024 3:16 pm

    I have RCA/Baldwin Clear tops in the gain and RCA JCR-5814A in the output.
    Do both play into SQ regardless of position?

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    SP12 preamp revisited Empty Re: SP12 preamp revisited

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      Current date/time is Fri Nov 22, 2024 12:53 pm