Although I've found that an interesting product, I want understand the need of it. Doesn't it the OEM amp or radio has the sub signal output?Are you planning on adding an aftermarket amp or trying to run it off of the factory amp? If I were contemplating doing what you’re doing, I would purchase a PacAudio AmpPro4 fd-21, a Toslink adapter and fiber optic cable, a small amp like the AudioControl 1.300 mono amp (that accepts an optional remote bass knob to give you control over the sub) and a 4 gauge amp wiring kit. You’ll not only be set, you will have also added the capability to expand (add tweets, door or rear deck speakers) down the road if you wish with the AmpPro in place.
Of course there are other ways of doing things, but I’m only speaking to what has worked for me in two different vehicles now. I’m sure others will chime in with more suggestions. Weigh your options and go with whatever works best for you.
I also just bought a 2019 with the 9 speaker system and have been looking into it as well. I do not believe there is a sub out signal from what I remember. Saw something about getting the signal from the front speaker instead in another thread. But I may be mistaken, so hopefully some with a little more knowledge can clarify.Although I've found that an interesting product, I want understand the need of it. Doesn't it the OEM amp or radio has the sub signal output?