i might have your solution, i have a single mic phantom power pack. might be getting rid of it don't really use it so. its a whirlwind phantom battery pack, with neutrik connectors, runs on 2 9v's for 50 hrs @ 4ma draw. i'll let you know if i don't want it, but i think power is basicly power, one might have a bit more noise than another, but doubt you'd be able to hear it.
matt