ECN Forum Forums General Topics of the Trade Non-US Electrical Systems & Trades Japan 100V --> 200V ?

Here in Vienna I've even measured 234V.
100V regardless of the input voltage? Really gotta check my old Sony stereo, but it's probably a US version (all labels are English, NEMA 1-15 plug, designed to operate on 100, 120, 220 and 240V, 50/60 Hz).