Mailist to discuss all issues regarding the Digitech GSP-2101 Guitar FX Processor

Hi guys!!I'm new here and i recently acquired a 2nd hand Digitech GSP 
2101 w/V3.00 upgrade chip(comes with the power cord).I bought from an 
eBay seller from the states.
I'm currently residing in Singapore.
My question is:

- at the back of the unit it states 105-130VAC 60Hz for the supply 
but my country suppply mains are 230-240VAC 50Hz instead.Can the unit 
be plugged in the mains or do i need to switch for a voltage selector 
in the unit itself?

-if there is no selector and i cant plugged it directly, do i need to 
buy a transformer to step down the supply voltage to 105-130VAC 60Hz.

-will the unit work if i plugged it to a 105-130VAC 50Hz transformer 
instead of 60Hz?And what power rating is recommended?

I hope to get some sound advice from you guys here as i read a lot of 
good reviews about this old product.I still do have my trusty RP-12
(the distortion is awesome and i hope the GSP is too) and a current 
GNX3000 workstation which i feel lacks the anologue touch on the 
distortions.
And btw i have not plugged the unit to my country standard mains 
yet.Please help me out here!Cheers!