Voltage differences Europe vs Japan


I am facing the possibility of moving from France to Japan for a few years and of course wish to take my beloved hi-fi system with me.
I understand that Japan (or at least Tokyo) has 100v mains vs the 230 here in Europe. I also believe that domestic mains wiring to sockets does not have any earth connection ?.
Can anybody please provide any guidance on where to source a quality transformer (or other option) and what happens ref the earth given that all of my components are earthed through their respective mains leads.
System is Emm Labs DCC2 & CDSD, ATC Active 50's, Mac Mini.
Many thanks in advance for any kind support & advice.
gsm
I work, in the US, for a large Japenese company, and some of the guys I work with are into audio, so I will check with them. They will know.

A question I have though, is why does anyone leave France for Japan? Japan is nice, but come on, France is great. It's a bigger California with better prices on housing!!
Thank you Macdadtexas

I really appreciate the kind assistance. Not much option for the move due to work, happily I shall be taking a young, beautiful, intelligent and music loving souvenir with me :-)
Gsm,
You may want to investigate power products from PS audio &/or competitors. When you move back to France you can use it as filter/regulator as they have adjustable voltage settings.
You may have to change your Schukos to US standard but that doesn't take much and they have a better contact also. I live in France and have my HiFi power cables fitted to US standard. Also you get a better and more price effective choice of power cables.
Tim
Thank you Timnaim, I appreciate very much the help, I had looked at PS audio etc but, cannot find a unit that accepts all input voltages and produces 230v / 50 htz output.
I am very happy to pay whatever it costs but cannot track down an obvious solution for the voltage / hertz.
In addition the lack of an earth through the mains concerns me !
Please keep the knowledge coming... it really is very much appreciated.
my guys said that Shunyanta makes a converter for Euro to Japanese conversion. He sent me the link in Japanese to my home computer, it would not just follow the link. He is looking for the English version(?). I don't know why the link would not work.

He is checking with one of his buddies in Tokyo to see about availabilty in Japan. I will get back to you.