I have a Tekkeon MP3400. Grabbed from eBay. They are not cheap as a Wally bat. Run ya about $100.00. Worth it for me, for my Nak 1K's get prickly when the voltage drops below 9V.he could prob get away with a 9v dvd battery though don't you think?
the 9v dvd is well tested with a ua5 and akg
That's exactly what I'm using. The same kind of battery I use for the V3. It just takes a different type of connector. I've been running both AKG 48X and DPA 4023's in front of the Aerco. If something happened to the recording by not enough juice to the mics, I'll know in the next few days while I work on them. From what I've heard, nothing happened to quality. I'll post later with results, good or bad.
For what it's worth, this little box is awesome!
EDIT: Everything is good! Like I said, this little box rocks! Very happy with the results of my recordings from the past three shows.