Thxs for the additional comments, Brent. The fully portable system on batteries would come handy for the on call shifts, short trips and such, but for vacations, away from home for more days, perhaps sound quality is more important and transportable is light enough, the 003 would make more sense. Maybe I should consider the 002 then an adapter to get it working on the 212 or even greater amps... see what you did?