NOT KNOWN DETAILS ABOUT 230 TO 12 VOLT TRANSFORMER

I've brought "Yamaha receiver RX 681" and polkaudio subwoofer from USA which run on 120v 60hz but in India I've 230v and 50hz.Whether you are in a rural spot or not, voltage drops or dips can occur. The component while in the 60 HP Rotary Phase Converter and Transformer Package deal is secured. This stage converter is usually protected from overloa