I thought it was a 1/16" allen wrench that was needed... but it's probably very close to another metric size
The jumpers are VERY easy to change out. Even though they're easy, I would still suggest that the vendors who cater to the taping scene change the jumpers as a "service" to their customers
The jumpers have no effect whatsoever when using the Mini-Me as a standalone A/D in line-in mode, only when running mic-in will it even matter.
As far as the preamp, I'm not sold on it either. I need to do some A/B comparisons with the AD1000.
Anyone ever run mics > xlr splitter > 2 preamps? Like, CMC64V > XLR splitter > minime + ad1000. I'd guess that there'd be a phantom power issue... although batteries wired in parallel still give the same voltage, just increased current. I plan to do some CMC64V > V2/MP-2 > XLR splitter > minime + ad1000 as well... maybe throw in a sonosax too, I know a punk kid who has one