I didn't want to hijack the other threads on this HU so here is my experience with it. I own a 2012 no navigation with a subwoofer and just wanted to swap out the HU without running an amp or installing speakers. I went ahead with the AX700 and have the subwoofer running in sub direct mode and everything is working but the subwoofer now sounds much worse than it did with the factory HU. It sounds punchy and muffled. It's really not even close to what it was with the factory unit and I am baffled. Any ideas? Or am I now trapped into running an amp off of the 5v pre-out?