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[Steelslinger]

I run an Infinity marine unit and has a USB drive, and it'll read mp3 or wma from it.

https://www.rocktheboatmarinestereo.com/html/62503.html

 

[DewMan]

I run an Infinity marine unit and has a USB drive, and it'll read mp3 or wma from it.

https://www.rocktheboatmarinestereo.com/html/62503.html

This checked all my boxes and I ordered it from Amazon for USD $175, It's power rating was for 4ohm speakers unlike the Rockford Fosgate's 50w @ 2ohm rating so I shouldn't need an amp. 
 

Much appreciated @Steelslinger . You just cost me $200 but saved me a ton of work.