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Whats the differences in GK800RB's over the years?

Discussion in 'Amps [BG]' started by A-Step-Towards, Dec 5, 2013.


  1. A-Step-Towards

    A-Step-Towards Supporting Member

    Joined:
    Nov 16, 2009
    Location:
    Los Angeles California
    I just picked up a older GK800RB that has the horizontal switch for dirt cheap on CL with rack ears and a nice roadcase.

    For over 3 years I have been playing a newer one, not sure of the year, with a vertical switch. I dont really need two of them and am debating which one to let go. There in similar shape, my newer one has some scratchier pots and the owner of the older one said he actually had all the pots in it replaced. I honestly cant tell a tone difference in them, I was just wondering if the older ones had more value or anything like that.

    Thanks.
     
  2. orangejulius3

    orangejulius3

    Joined:
    May 6, 2013
    Location:
    La Habra CA
    I think B-string knows.
    Hopefully he chimes in, if not, shoot him a PM.
     
  3. B-string

    B-string Gold Supporting Member

    Joined:
    Nov 21, 2008
    Location:
    Lake Havasu City, Az USA
    The differences were mainly going from an EI core power transformer to a toroidal transformer, detachable power cord and the digital switch IC for the boost circuit is obsolete and the amp would have to be modified if it fails in the old ones. There are other small changes that were made for stability or obsolete control pots. The newer ones have only one output jack for the 100 watt amp so less burned up 100 watt sections from people running two 8 ohm cabs on the 100 watt amp.
     
  4. A-Step-Towards

    A-Step-Towards Supporting Member

    Joined:
    Nov 16, 2009
    Location:
    Los Angeles California
    Cool deal thanks for the info. I think I am just going to keep my old one which is the newer one and sell the one I recently got, I guess I just have faith in it from years of reliable use.
     
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  6. B-string

    B-string Gold Supporting Member

    Joined:
    Nov 21, 2008
    Location:
    Lake Havasu City, Az USA
    That is probably the better plan. Pay a tech $30-$60 to clean the jacks, pots and switches and give it the once over. It will be good for many more trouble free years. 99% chance the scratchy pots just need a proper cleaning.
     
  7. A-Step-Towards

    A-Step-Towards Supporting Member

    Joined:
    Nov 16, 2009
    Location:
    Los Angeles California
    Yeah I am sure thats about all it needs. I also have never got a case for it so I will keep the case and rack ears from the older one, sell the older one at a slight profit and clean up my current 800RB because i absolutely love that amp and depend on it a lot.

    Do you know where one can get replacement gray caps for the knobs? mine is missing 2 caps and I would like to just give the thing a nice clean up.
     
  8. B-string

    B-string Gold Supporting Member

    Joined:
    Nov 21, 2008
    Location:
    Lake Havasu City, Az USA
    G-K Parts
    lailany@gallien.com
    or (209) 234-7300 extension 120. 9am to 4pm PST USA M-F

    $0.90 each IIRC but the shipping sucks ask for USPS.
     
  9. A-Step-Towards

    A-Step-Towards Supporting Member

    Joined:
    Nov 16, 2009
    Location:
    Los Angeles California
    Awesome thanks for all the information!
     
  10. B-string

    B-string Gold Supporting Member

    Joined:
    Nov 21, 2008
    Location:
    Lake Havasu City, Az USA
    No problem ;). Least an ex Ventura County fella can do.
     
  11. 1bassplayin

    1bassplayin This space for rent Supporting Member

    Joined:
    Feb 16, 2003
    Location:
    The land of fruits and nuts
    I have some extras you can have. PM me I'm in the IE.
     
  12. rag

    rag

    Joined:
    Mar 24, 2003
    Disclosures:
    Robert A. Gallien, President Gallien-Krueger
    This guy really knows what he is talking about!
    RAG
     
  13. WingKL

    WingKL

    Joined:
    May 12, 2007
    It really helps when the production and engineering change orders are released along with the service manual :)
     
  14. B-string

    B-string Gold Supporting Member

    Joined:
    Nov 21, 2008
    Location:
    Lake Havasu City, Az USA
    Thank you Bob. Cudos to you for a design that has remained viable so long without major reworking!
     
  15. esa372

    esa372 Supporting Member

    Joined:
    Aug 7, 2010
    Location:
    Los Angeles, CA
    +1
     

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