thanks for replying. No, the PX-2g is rated for 120v, I bought the JM-4 on Amazon in the United States a couple of years ago. I knew i should have used a step down transformer from 220v to 120v, but jet lag got the better of me and I plugged it into the wall voltage here, which is 220 volt. Did I fry the looper pedal or just the power supply? Will the looper work if I get another compatible power supply? thanks