..anyway today I tried to lower the supply voltage: at 200 volts internal BDP-2 hiss is not more audible, but from about 205 to upper returns a thin "whistle"; really it's not too much trouble, You can notice it when there is silence...or get closer to the player, but I wanted understand if this (after time) can give problems. P.S. At my home usual voltage is 225/230 volts.
Regards
Roberto