Sooo... was holding off on posting anything, but seeing DavidRam post up his 2018 WK2 - man the inspiration is flowing! Feeling some love for the Grand Cherokees now, and couldn't resist.
Ours has the 10 speaker Alpine setup. UConnect 8.4 - to a 10 channel amplifier, that feeds a single 3" center channel, 1" tweeters in the sail panels, 6x9" woofers in the front doors, 6.5" speakers in the rear doors, 2.5" speakers way back in the D pillars, and a single 8" sub in the cargo area on the passenger side.
Thought about reusing the FiX82 and TwK D8 from our 2016 Challenger, but with only eight inputs, couldn't figure out how to get all 10 signals summed into one. Factory amp bypass seemed like the best option. I see PAC has the AmpPro out, and really neat to get the optical add on, but... I've not had luck with PAC products at all in the past. Seems like the people I know that have purchased the AmpPro have had no issues, which is awesome. But the past bad stuff still leaves a pretty bitter opinion from me of their company, so I went another route. Picked up a Rockford Fosgate DSR1 along with the plug and play harness for the WK2. Amp bypass, eight channels of output with DSP built in. And, that's about as far as I made it.