But ... The Sony A10 has to be recharged with USB cables, and has a limited battery span. I can run my M10 or the DR2d for 12 hours+ So the Dr2d and Sony M10 are better suited for long festivals. XLRs take up too much space, like minijacks for stealth purposes.
True, but the A10 should make it through most days on a charge.
Also you can plug A10 into USB power any time and top up the battery, or just leave it running off a USB pack if needed. Though it kinda kills the advantage of the tiny unit.
I had an issue with the size of the A10 for the past few weeks, because I could not find the dang thing until I really looked in the gear drawer!
On the other hand, the M10 is amazing on battery life.
I just ran 9 hours plus on a pair of cheap alkalines, and it has not dropped a bar!