all i heard was that the marine i dax deck is 100 bucks more than the regular i dax deck. the amps only come in a pdx 4150 and a pdx 600.1. the regular i dax decks work real good. im sure the marine one wont be any different. i the deck runs $399.
save your $$$ buy the regualr Alpine, I refuse to buy into the advantages of "marine" audio equipment in wake boats...it's just not needed. In almost all wakeboats the audio equipment stays just as dry as if it were in a car.