The Yamaha AN1x Synthesizer mailing list

Yep, it switches automatically between 50 or 60 Hz, whatever you need. (i think
;)

> Yes we do use a different Hz, but it doesn't matter, all the power
> conversion is done in the transformer, which is inside the power supply,
> all you need to do is plug the right power supply between your synth and
> the outlet and you're off.
>
> By the way, the standard Yamaha 12v adaptor for their synts is model PA-3B.

<snippy>