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 products and all products

    SP12 preamp



    Posts : 39
    Join date : 2009-11-03

    SP12 preamp

    Post by Mike16W on Sat Feb 26, 2011 12:43 pm

    Does anyone have the SP12 preamp and what is your impressions. I am looking to build a new preamp.


    Posts : 69
    Join date : 2010-11-09
    Location : Texas

    Re: SP12 preamp

    Post by edgobb on Sun Feb 27, 2011 11:16 pm

    I have the parts and am currently in the process of building an SP12 along with a PH12 phono stage. I plan to start a build thread tonight or tomorrow, so you can get some impressions as I go if you'd like. So far, I'm having a great time and can't wait to hear it.


    Posts : 1463
    Join date : 2008-11-30

    Re: SP12 preamp

    Post by tubes4hifi on Fri Mar 04, 2011 3:29 am

    yes the SP12 is an AIKIDO PCB optimized for line stage use and with a simpler parts list so you don't have to guess at what configuration is best, I've built dozens of these and they sound great, but good luck trying to get any from the original source.   I bought a good supply a month ago because they were out of stock for 6 months.    
    My kit also includes a tube power supply rather than the solid state supply of the original which to me is a SIN to use on a tube preamp.

    Last edited by tubes4hifi on Thu Jul 18, 2013 10:45 pm; edited 1 time in total

    Posts : 50
    Join date : 2013-06-22
    Location : Bellingham, WA

    Re: SP12 preamp

    Post by guentherj2 on Fri Jul 12, 2013 10:11 pm

    Just got prebuilt SP12 and ST120 a week ago and am loving life. Excellent products.

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