I've just bought a vintage CD player - Pioneer P-D70.  It's a Japan model so it only runs on 100V (27W) and is not switchable.  

Ideally, I would like to buy a dedicated 100V transformer, but so far, the only ones I can find are 110/115V for US appliances. Could anyone point me to a supplier of 100V transformers?

If I use one of the 110V US transformers, given that it's a delicate and fairly old player (1984), do I run the risk of damaging it or having performance issues?

Thanks,

Muzza