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


    Looking at Mark IIIs

    Share

    Tom

    Posts : 166
    Join date : 2011-04-04

    Looking at Mark IIIs

    Post by Tom on Sun Feb 07, 2016 2:55 pm

    Hi All,
    Pair of Mark IIIs on the local craigslist.
    Guy says the they "work perfect" but know nothing else about them,
    except that they're tube gear so worth big $$ Razz

    Have not looked at them yet, they don't seem to be going anywhere due to price -

    What should I look for when I go check them out?

    Any help appreciated,
    Tom

    DynakitParts
    Admin

    Posts : 181
    Join date : 2008-12-01

    MK III Amps

    Post by DynakitParts on Sun Feb 07, 2016 4:01 pm

    Hi Tom,
              Since this guy is local and I assume you will be personally picking these up....Ask the buyer to have these setup so you can listen to them to confirm they are in good working order. Telltale signs you should be concerned with...Low to high level Hum at either amp our through either channel speaker. Output tubes that appear to be glowing "RED"....
    Also ask the seller measure the bias to confirm that the output tubes can be biased within a suitable range of let's say 1.3 to 1.56 vdc. Ask the seller if these amps are stock and if modified request some documentation or at the least an explanation of what modification were made to the units.
    Keep in mind that issues such as Hum can often be nothing more than a failing capacitor which can be replaced.
    Meeting the seller in person and having the opportunity to listen to these amps is a much better situation than purchasing items like this on Ebay.
    By the way...What is the asking price for these MK III amplifiers?

    Kevin @ Dynakit

    peterh

    Posts : 642
    Join date : 2012-12-25
    Location : gothenburg, sweden

    Re: Looking at Mark IIIs

    Post by peterh on Sun Feb 07, 2016 4:19 pm

    Tom wrote:Hi All,
    Pair of Mark IIIs on the local craigslist.
    Guy says the they "work perfect" but know nothing else about them,
    except that they're tube gear so worth big $$ :P

    Have not looked at them yet, they don't seem to be going anywhere due to price -

    What should I look for when I go check them out?

    Any help appreciated,
    Tom
    Any signs of mods : half price, or jump it.
    screws worn : be aware
    Smells burned : stay away unless you identify something cheap.
    Never touched : go for it

    don't care about the tubes, it's time to replace anyway.( never pay premium price because "fine tubes", better to let seller keep the tubes)

    MontanaWay

    Posts : 767
    Join date : 2014-02-06
    Age : 58
    Location : Cameron, Montana

    Re: Looking at Mark IIIs

    Post by MontanaWay on Sun Feb 07, 2016 4:52 pm

    caveat emptor!
    Still, yes, seeing them in person is the way to go. If they've been on the local craigslist for a while, because he's asking way too much, make him a reasonable offer, providing of course they've not been butchered too much over the years!

    Tom

    Posts : 166
    Join date : 2011-04-04

    Re: Looking at Mark IIIs

    Post by Tom on Sun Feb 07, 2016 5:27 pm

    He's asking $650. For a couple hundred more I could have a nice new VTA120....

    Very Happy

    peterh

    Posts : 642
    Join date : 2012-12-25
    Location : gothenburg, sweden

    Re: Looking at Mark IIIs

    Post by peterh on Sun Feb 07, 2016 5:36 pm

    Tom wrote:He's asking $650.  For a couple hundred more I could have a nice new VTA120....

    :D

    This very much set's the limit. If they are pristine, go. If damaged be careful.
    A new amp is always a "known starting point".

    Maintarget

    Posts : 208
    Join date : 2013-02-10

    Re: Looking at Mark IIIs

    Post by Maintarget on Sun Feb 07, 2016 7:25 pm

    IMHO you answered your own question, Old used equipment=work/part replacement or New known condition that if assembled properly will provide years of trouble free operation and sound excellent right from the start.
    Either way let us know and enjoy!

    Tom

    Posts : 166
    Join date : 2011-04-04

    Re: Looking at Mark IIIs

    Post by Tom on Sun Feb 07, 2016 8:01 pm

    ^to a certain extent, cost, yes that questions I had an answer for Wink

    what I was looking for was any experience in what sort of clues
    might tip me on what shape these amps are in
    and/or any known troubles to check for

    Kevin and peterh's posts - that's the info I'm needing

    Thanks!!

    Sponsored content

    Re: Looking at Mark IIIs

    Post by Sponsored content Today at 10:22 am


      Current date/time is Thu Sep 29, 2016 10:22 am