Hi, i recently purchased an M Audio delta 1010 from the U.S. and i need a step down transformer to convert 120vac to 240vac for use in Australia, Simple enough, However the frequency's different The U.S. uses 60Hz and Australia 50Hz. I was reading that in some devices this is not a problem ( like my tel ray delay for example) but in others it is, so what category does the Delta 1010 fall under?