Audio Research VT60 conversion to 220V


Hello. I have Audio Research VT 60 power amplifier that works at 110V. Since I live in Europe I shall to convert it to 220V. How to do this?
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Thanks. I already have auto-transformer, but I would like to make this unit as it was genuine 220V/50Hz. I suppose I do have to make changes onto power transformer or to make complete change of it with 220V one. How to make coils on primar and secundar side is the question and if this transformer will fit because of limited space.
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