Since I am back in a XF then I am at the point where I want to upgrade the system I went another direction in this car with the marine Power Acoustik MCD-51B which states its 300x4 channels and it has a silver face. In the 1st car I went with the suggested Kenwood unit. Not sure if I want to wire it as mentioned and turn the amp into the 4 channel setup using the stock amp and speaker which i did in the 1st time or just wire it as a new unit and install the JBL 6.5 component speakers I have for the doors and install the JBL 2 ways on the back panel using only the head units power. Not going to go with the big *** box in the rear with 12" woofers at 58 yo but I do like my music loud and clear since I have lost some hearing most likely due to listening to loud music. Any suggestions ? If need be I will buy a amp to replace the stock one and sell it on flea bay. The Kenwood I went with last time was doubled in price and the review were not that good so I decided to go with this unit since it was less than a 100 bucks and came with 2 speakers I can use at the houseboat. I can return it as long as its before Feb 2021 with free returns so that should allow enough time to know if its a keeper or not.