treshold dac1e psu for dacs new?

Hi I am thinking to the best fir muìy ddac 1 e that sound so analogue and musicla, the best I have heard, so I am thinking to alimentate the dacs with batterias recarghable.:D
What do you think about? Is it the tension B+ for the 4 dacs, 12 volt?:confused:

thanks in advanced,
cheers, paolo VENEZIA