Finally got the Kali LP6 and Motu M4 hooked up to the Mac Mini. Can't leave it connected for now due space constraints, but at least I know everything works.
Oh.
And d@mn, the LP6 sound good. Real good. I was torn and wanting to save some money... leaned hard toward the JBL LSR306 mk2 for a moment. So glad I changed my direction. These have no hiss audible at 3' and the sound is clean and smooth.