Do you also suggest changing the fuse and amplifier power cable to meet new current requirements? I am not able to locate the fuse though.Yes, for safety reason, changing the main fuse is a must!
Usually you can find the fuse on the power switch pcb or soft-start board in a Accuphase integrated, and its clearly specified the fuse rating requirements on the board.
For power cable, you can either buy a new cable or some kind of plug adapter, I always found Accuphase cable are good enough for my use.
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I am gonna make these changes and report back if it worked.Before you swiping the wires, measure the resistance across tap 2 and tap 4, after conversion the value should be about 4 times higher.
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I also strongly recommend to use a 230V 100 watts Incandescent light bulb in series to power up the amp at the first time after voltage conversion.
If anything goes wrong the light bulb will simply light up instead of dimming and save the amplifier from any damage.