I’m sure some people here will start firing torpedoes but as far as I know this amp has a switching power supply that takes up less than 60W and I see no difference in heat or sound whether I plug it into the wall straight for through $70 Amazon step down 100V which doesn’t vibrate or heat up after weeks of continuous up time For other Japanese imports I have I would never do that.
btw I am of the step up step down “absolutely affects the sound” camp for traditional class A or AB amps that draw some few hundred watts and dim your room lights when powering on. But not for something that draws less than an Alienware computer.
You plug your laptop when you’re at a hotel overseas don’t you?