currently using a 552, use IDX Lithium Ion to power mixer and usually 2 or 3 411's. This set up works well for my needs.
for those of you using NP's batteries to power the 663, is that working out well?
For simplicity and cost reasons, I would like just to continue to use NP's for both packages
rather than have to purchase the B2 batteries for use with the 663...