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| Powerstat 15 Amp Variac Variable Transformer | Powerstat 15 Amp Variac Variable Transformer. Install it in your own case; especially good to install it with an isolation transformer and no surprises. Ramp up slowly the voltage into any old radio or tube amplifier. Should work for any old radio or power amplifier. Works well.15 Price: $ 49.00 Shipping: $ 29.00 (U.S.Only, Please email for international rates)
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