Most Quilter amps are designed to operate on any voltage. US or overseas. 100-230 volts.
Quilter amps can work even on bad voltages in places like nightclubs, gymnasiums, or even generator power at festivals.
Since we have a universal power supply the amplifier can automatically adjust to voltage and to some extent even help to make up for bad power or noisy power.
The only thing you will need to do is get an appropriate IEC compatible cable which can be found here.
So feel free to travel about the world with your Quilter!