Convert new GK MB200 110V to 240V

@Groove Doctor

Sorry to be reviving this thread - but i'm in a similar position (currently living in Japan/100v, and may at somepoint move back to Europe/230v).

Did the jumper-switch work? did the amp function normally thereafter, or were there fireworks?

The labelling on the version I have is very adamantly saying "100V only operation", but the circuitboard looks the same, including the 115/230 jumper

Thanks in advance to anyone who could confirm :)
Dead easy. Moved the jumper as outlined above and works perfectly.