My 2016 MKC regretfully did not have a THX system, just the factory stock sound system....when I enquired about the lack of MKC's on their lot without THX sound, the answer I got was that a lot of customers balked at the cost,so unless you ordered your MKC to suit you, you're out of luck.....I had a MKX as a loner with the THX and I found it light years ahead of the stock sound system.....I would have gotten it if I ordered the MKC from factory, but I bought from what they had on the lot...the one I chose was fully loaded other than the tow package and the THX.
I always upgraded my sound in whatever car I bought...just never liked what I heard in 99.9 of them, additional amps ( usually Fosgates ) and speakers along with head were always the norm for me... in the case of my Mustang I upgraded all speakers, added a 12" woofer on it's own dedicated amp and high end speakers all around,I retained the original head because it has certain electronics that I did not want to loose,but overall a vast improvement over the stocker!
2016 MKC, Reserve. White Platinum Met Tri-coat.
Leather ebony interior.
2.3L GTDI ecoboost.
6-speed select SHIFT auto trans.
20" premium painted Alum wheels.
Equipment Group 300A.
Silver rust protection.
Xzilon exterior paint protection.
Weather Tech front and rear liners ....the rest is ALL Lincoln.