Converter

"Ldcovino [email protected] [YamahaDX]" <[email protected]> Mon, 10 Jun 2019 19:18:27 +0000 (UTC)
Newsgroups gmane.music.equipment.yamaha-dx
Message-ID <[email protected]>
I apologize if this question has already been asked and answered.  I have been unable to find any communication about it. 
I have Japanese DX7 that uses 100 volts, and I thought there was discussion at one time that there was a converter available to allow it too safely use 110-120 volts here in the US. 
I know it will run on standard US current, but I want to safe without damage to the unit, thanks in advance!
Can someone help me out here?   Thanks!!!
Regards,  

L. David Covino CFE ALHC