Discussion about the Korg PolySix synthesizer

hello guys, 

i'm trying to modify a p6 so that it is no longer 110 v as for US but 220 without using a step down convertor or anything like that. 

so i know i need a transformer with two secondaries. does anybody know what is the output AC voltage of the original p6 transformer ? 30 v ? 

thanks 
razvan