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50ca10

  1. smurfer77

    Shuguang 50CA10 tubes - any good?

    Hi everyone. I've got a Luxman MQ60 amplifier with rare 50CA10 outputs. There are a couple of other Luxman amps using these tubes, but not many. Luxman had the tubes made by NEC especially for their amps. What makes them slightly unusual is their 50V heaters (pairs are wired in series over the...
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