My 2016 Screw came with the 4" screen but also the sony center speaker. Anyone know if it has an outboard amp before I add anything(new separates/amp etc.)?

 

Sounds like you have the Sony ‘premium’ sound system. Amp is behind the drivers seat, and can’t be removed. You’ll need a PAC AmpPRO AP4-FD21 (interface module) in order to add aftermarket amps.

if you haven’t already, head over to the aftermarket audio subforum. Tons of knowledge and experience there, as well as some vendors who are very familiar with your factory set up.

https://www.f150forum.com/f30/