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Whats the differences in GK800RB's over the years?

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

  1. A-Step-Towards

    A-Step-Towards Supporting Member

    Nov 16, 2009
    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.

  2. I think B-string knows.
    Hopefully he chimes in, if not, shoot him a PM.
  3. B-string

    B-string Supporting Member

    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core power transformer to a toroidal transformer, detachable power cord and the digital switch IC for the boost circuit is obsolete and the amp would have to be modified if it fails in the old ones.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

    Nov 16, 2009
    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.
  5. Sponsored by:

  6. B-string

    B-string Supporting Member

    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

    Nov 16, 2009
    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 Supporting Member

    G-K Parts
    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

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

    B-string Supporting Member

    No problem ;). Least an ex Ventura County fella can do.
  11. 1bassplayin

    1bassplayin -Nowhere Man- Supporting Member

    I have some extras you can have. PM me I'm in the IE.
  12. rag


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


    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 Supporting Member

    Thank you Bob. Cudos to you for a design that has remained viable so long without major reworking!
  15. esa372

    esa372 Supporting Member

    Aug 7, 2010
    Los Angeles, CA

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