Rockford Fosgate PMX-3

The Rockford Fosgate PMX-3 won't break the bank but still has some bells and whistles.

Rockford Fosgate PMX-3
MSRP: $350Rockford Fosgate

This digital-media receiver won't break the bank but still has some bells and whistles, like an input for a backup cam with reverse trigger. It's IPX6-rated, which means it can handle the elements. A solid choice for small to midsize boats.