Power does not decrease when on 12V for the PA only on 24V.
Using a 3 amp supply for the 12V both main board and the PA (when it is on 12V). When I switch the PA to 24V, I use a set of LIPO batteries from my kids RC plane. Power source has not changed from before to after boxing. I added a switch and an external jack so I don't have to unplug or open the case to change sources.
