120v vs 240v

 I would recommend 2 30amp dedicated circuits using #3 10 gauge wire.  With both receptacles will be dual voltage: top plug 125 volts 30 amps and bottom 250 volts 30 amps...running the amps on 230 volts increases the dynamics of the amp, transient response, and lowers the noise flow.  No speaker cable I ever tried made that difference... 
just a thought... 

CLEEDS the the plug that is needed is a leviton 5842-i i have 2 in my home in stall by a electrician 125v 20amps top bottom 250v 20amps my amps run on 230v to run 125v change the power cord thats it 230v powe cord is a nema-6-20p to c13 iec my amps see the voltage from 100v to 250v no change of the amp is needed

DJONES he wants to know if runing the amp on 230v will sound better yes it will i my amps and preamp run on 230v i went down that road no power cord will do that

i get it go on amazon type in leviton 5842-i  plug i went down this road if you do run #3-10 awg from pannel to plug now you can run any thing from 100v to 250v consult a electrician tell what you want

cleeds my bad your right my mistake they have 20amp breakers 10/3 wire is 30 amp i have 10/3 wire