The B&O stereo doesn’t lend itself to the $500 and under upgrade. You need a signal processor for even a minor update and I think the outlay for the b&o stereo in the ’18 and up Raptor is about $2k US, give or take. Even with the Sony system you could ‘improve’ things over time, but you were still looking at about $1200 for about 50w to the main speakers and 3-500 to the sub. I think I’m in for closer to 1800.
I think
@goblues38 upgraded the b&o for a contextually low cost - that is, low cost for the result and with the b&o.
Unfortunately with the b&o amp and signal processing still in place, the only thing you can really do is prep for actual audio upgrades by updating the speakers, maybe adding some sound insulation. Everything else will require signal processing and amps, so you may as well spend it all at once and do it all at once.
The reason the sound system sounds bad to us is that the average consumer thinks it’s fine sitting on the lot - and it is, unless you bring along some complex audio tracks to play. Then you miss quite a bit. Ford programs the signal processing to make lower volumes sound louder than they actually are and then starts rolling off volume at about 3/4, especially to the sub.
I know the prospect of dumping that much money into an already expensive truck is unattractive, but if you want it to sound good, you’re going to get what you pay for and if you pay for less than the signal processor, amps, speakers, power connections and good cables, you’ll get less than brilliant results.
Good luck.