Hi guys, I’m new to the forum and trying to design a system for my e36 BMW. It has the stock H/K system now which I plan to totally replace. I’m looking at Focal v30 6.5” for the front stage and looking into 10” IB subs for the rear deck. I have a friend with a Phoenix Gold Xenon x200.4 four channel amp that I was planning to use to power the system. My thought was to bridge the rear channels to power the subs but it is a fairly large amp and installing it discreetly will take some effort. After seeing the Alpine PDX F4 and its compact size I’m wondering if it may be a better choice. How do the two amps compare if size were not an issue? Thanks!