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    Dynaco st 70 series ll and pas 3 series ll

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    Sergio

    Posts : 1
    Join date : 2017-12-24

    Dynaco st 70 series ll and pas 3 series ll

    Post by Sergio on Tue Dec 26, 2017 7:29 am

    Dear friends,

    I have the opportunity to buy a Dynaco st 70 series ll and pas 3 series ll
    The price would be 800 dollars.
    Could you recommend me if it's worth your purchase.
    I do not see references of the quality of these devices.
    I thank you very much for your help
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    peterh

    Posts : 959
    Join date : 2012-12-25
    Location : gothenburg, sweden

    Re: Dynaco st 70 series ll and pas 3 series ll

    Post by peterh on Tue Dec 26, 2017 9:27 am

    Sergio wrote:Dear friends,

    I have the opportunity to buy a Dynaco st 70 series ll and pas 3 series ll
    The price would be 800 dollars.
    Could you recommend me if it's worth your purchase.
    I do not see references of the quality of these devices.
    I thank you very much for your help

    Y E S ! !
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    Bob Latino
    Admin

    Posts : 2644
    Join date : 2008-11-26
    Location : Massachusetts

    Re: Dynaco st 70 series ll and pas 3 series ll

    Post by Bob Latino on Tue Dec 26, 2017 11:36 am

    The only problem I see with the purchase of either or both units is that AFAIK there are no boards available for either unit should you need to replace a board ? There is no aftermarket support for either the PAS-3 or ST-70 Series II. The PAS-3 series II was a transitional model from the early '90's put out by Panor. Later in the 1990's, Panor came out with the PAS-4 which is a very well made unit and better sounding than any PAS-3. A few years ago I had the opportunity to work on a PAS-4 for a local customer. Well made and a good sounding preamp for its day. The PAS-3 Series II had six 12AX7 tubes rather than four 12AX7 tubes like the original PAS-2/3. PAS-3 Series II schematic below ..

    Bob


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    j beede

    Posts : 442
    Join date : 2011-02-07
    Location : California

    Re: Dynaco st 70 series ll and pas 3 series ll

    Post by j beede on Tue Dec 26, 2017 1:30 pm

    The circuitry can be repaired/updated. There is not too much that can be done about the cosmetics. If they are original, complete, stock, and look very good I would probably be a buyer.
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    DynakitParts
    Admin

    Posts : 195
    Join date : 2008-11-30

    PAS 3 Series II

    Post by DynakitParts on Tue Dec 26, 2017 7:22 pm

    Hi Guys,
    Merry Christmas....

    Finding a replacement circuit board mounted power transformer for this Series II preamp will be very difficult and this appears to be a common problem with this specific unit.

    Just my two cents on this....I agree with Bob that the PAS 4 is the more desirable unit.

    Regards,

    Kevin

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    Re: Dynaco st 70 series ll and pas 3 series ll

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