I have a 2012 Chrysler 300 with the 8.4" re3 factory head unit and upgraded 6 speaker alpine system with oem amp. I am adding a 4 channel Orion xtr pro 500.4 for the front stage and an Orion xtr pro 1000 for subs. My question is should I use the PAC converter (takes the low level signal from the can bus and converts it into an analog 5v 4 channel preout 20-20k hz) or a loc like the audio control lc7i. I will keep the better signal using the PAC but will gain eq features etc with the audio control. What do you guys think?