Sunn 200s bias question

Discussion in 'Amps and Cabs [BG]' started by draygriff, Apr 1, 2018.


Tags:
  1. I have an old Sunn 200S that I would like to resurrect. It needs new tubes. Does the amp need biasing or is it a fixed bias amp?
     
  2. agedhorse

    agedhorse Supporting Member Commercial User

    Feb 12, 2006
    Davis, CA (USA)
    Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
    Needs to be biased, and it's not a DIY project on these amps. There is no convenient way to measure the plate current, a bias socket fixture is needed (or the amp needs to be modified to include this in the cathode circuit).
     
  3. Thanks for the reply. Looks like I need to find a good amp tech.
     
  4. Stumbo

    Stumbo Guest

    Feb 11, 2008
  5. Stumbo likes this.
  6. chadds

    chadds

    Mar 18, 2000
    What!? I'm biased toward them. Isn't that enough? :)
     
  7. Primary

    Primary TB Assistant

    Here are some related products that TB members are talking about. Clicking on a product will take you to TB’s partner, Primary, where you can find links to TB discussions about these products.

     
    Sep 22, 2021

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.