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  • Mystery Japanese amp

    I'm working on a no name, possibly Japanese made practice amp. It would be a great help if someone could identify the make and model for me. It's valves are an EL84, two ECC83's and a 6X4. Rubycon caps and koaohm resistors. It sounds great! Ta.
    Attached Files

  • #2
    I can't identify it for you, but it would be simple to draw up a schematic from it for servicing it.
    Education is what you're left with after you have forgotten what you have learned.

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    • #3
      Probably a variation of the Yamaha G5. Has one less knob that I can see.

      Click image for larger version

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      Valvulados

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      • #4
        Quite a variation indeed

        The G5 is a 5W SS practice amplifier
        Juan Manuel Fahey

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        • #5
          It looks like a Teisco Checkmate 17 chassis. I think that it has the same tubes as well.

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          • #6
            52Bill wins the holiday for 3 in Panama!

            Chassis photo thanks to Romy Concepcion
            http://vintageguitaramps.blogspot.co...-tube-amp.html
            Schematic thanks to Robert Gabor
            http://www.tremolo.pl/sch//Firmowe/T.../Teisco_10.jpg
            Attached Files
            Last edited by oc disorder; 06-08-2016, 08:43 PM.

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            • #7
              Originally posted by J M Fahey View Post
              Quite a variation indeed

              The G5 is a 5W SS practice amplifier
              Oops.
              Valvulados

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              • #8
                A Teisco it is! Thanks very much for that. I knew someone would know.

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