Apogee had 3 major revisions of the Mini-ME:
- A - First batch - required 7.5v-16v Power - Black enclosure with older Apogee Logo printed in Purple and white on top
- B - Second+ Batch -
power - Pretty sure this had the black enclosure as well (different gain structure to Rev A when Pre Amp disabled)
- C - Most common - 6-16v Power - Silver Enclosure (it's possible that there are some black ones as well) - Reverted gain structure back to Rev A