Hi Chris,
<snip> I've read posts where people run AT-853's>R09 w/ no battery box so I'd think it would work.
I've recorded quite often with AT822>R09 with no battery box. I've posted part of a recording
in yahoo group edirolr1, files section.
I generally use it to record vocal groups or pit bands at musicals. I'm pleased with what it
does. Of course it would be nicer if it were an R44 with 4 mics, but it seemed you were asking
about the AT822 single point stereo mic feeding the R09...
thanks
jim cowan