Agree with Darby on PR-2, but will qualify one point..
Deity PR-2
has ability to lower your input (-dB) for HOT outputs
^ that may be true for PR-2 in line-in mode, but not in mic-in mode.
I've not tested the PR-2's line input capability myself, so will defer to Darby that, and presumably that's how you will be using it along with an Nbox powering the mics. However, be aware that if the intent is to use the recorder's 5V PIP to power mics, the PR-2 must be set to mic-in, since that's the only way to engage plug in power. ..and when in mic-in mode, attempting to lower input gain below 0dB to accommodate a hot mic input isn't likely to be successful. You'll instead need to attenuate the signal ahead of the PR-2, in a way that still passes PIP. When in mic-in mode input gain on the PR-2 is fully adjustable into the negative gain range, however, doing so will not prevent the the input stage of the PR2 from overloading.
Here are some actual numbers: In my brief use of PR-2, taking advantage of its 5V PIP by running mics straight in, I found DPA 4060 which has a sensitivity of 20 mV/Pa; -34 dB re. 1 V/Pa, to be too hot, while DPA 4061 which has a sensitivity of 6 mV/Pa; -44 dB re. 1 V/Pa, worked fine.
My primary point of comparison is Tascam DR2d which is able to accommodate a significantly hotter mic-in signal. I've not used the A10. Neither of those provide 5V PIP.