Superior Electric Powerstat variable transformer and isolation transformer

!: Superior Electric Powerstat variable transformer and isolation transformer

SouthJK found this custom-made combination of a Superior Powerstat and heavy-duty isolation transformer. We are using it to troubleshoot a transformerless chassis record player tube amp. This Powerstat is just like Spats' except ours goes to 140 volts.

Superior Electric Powerstat variable transformer and isolation transformer

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