I have a brand new Bazooka system in my Polaris ranger. System components are: Bazooka Blue Tooth Module, 4x75watt Bazooka Marine Amp, Two double ended 8.25" x 6" Bazooka Marine Tower speakers, and a 250 Watt Preamp 8" Bass Tube. I don't have a head unit. I play everything thru my phone thru...