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SWR Tube Preamp question

Discussion in 'Amps and Cabs [BG]' started by JRBrown, Sep 28, 2002.

  1. JRBrown


    Jun 21, 2000
    North Carolina
    I've got a SWR Grand Prix. I pulled the cover to check the make date (Jan 25 99). I looked at the tube and saw that it had no markings. SWR says that it's a Groove Tube 12AX7A. What make replacement tube will bring out the best sound (warmth and quietness) with out any other adjustments?


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