audio overhaul

Just joined the club and picked up an LX470 in great shape, and hope to own and enjoy it for a long time to come . But the car being 27 years old, the audio system is super tired, bass is very boomy, sounds like it's coming from an 90's boombox :-). But I'm confused by what's in the car. Mine...

Hey guys, I’m advising on my bud’s 2010 lc audio overhaul. He has the base model lc (no tweeter pods in the rear doors base lol) My question is what’s lost when you disconnect factory amp. He bought a man android screen and I assume they have mediocre voltage and tuning capability so plan is...