Microset 10 Meter Amp

I bought this amp, import from Italy. It has some good reviews.......
http://www.ebay.com/itm/Linear-Ampl.../331836193253?ssPageName=ADME:X:RRNTB:US:3160

I overlooked one small item, it is 24 volt! yea call me a idiot or whatever but I'm stuck with it now. Seller wont take a return. Why they sell to the USA not compatible with 12 volts who knows.

Anyone know if there is a fix or way to convert a 24 volt amp to 12 volt?

Thanks, 392