Does anyone know what the "IMG matched #" means on Ruby tubes?

Discussion in 'Amps and Cabs' started by EADGBE, Jan 30, 2015.

  1. EADGBE

    EADGBE Member

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    I just bought a quad of Ruby EL34 BSTR and the IMG matched # are 045, 044, 043 and 031. The PC: and TC: numbers are all the same however. Does anyone know what the "IMG matched #" means?
     
  2. Blue Strat

    Blue Strat Member

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    No, but the PC and TC numbers are all that matters. IMG numbers could be production lot numbers. Chances are that only Ruby knows for sure.
     
  3. EADGBE

    EADGBE Member

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    Thank you Blue Strat!
     

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