i would opt for the amp, and 4 speakers of whatever your choice(i would choose jl, mbquart, fusion)
i plan on putting sound in my 18.5 cc, but every boat i've been on, whether cheap/expensive, car/boat, radios all skip ,
even on mp3 discs....i would get the amp , and run the four speakers off the amp and have this plug
from your ipod/smartphone to the amp
keeps the install process soooo much simpler, and music quality is unmatchable compared to a cd/radio, no skips, and
more than likley you will preserve the life of your speakers by properly wiring them with right impediances----where if you ran
off your deck, you wouldn't be porperly powering your speakers plus the ohmagge is probably off. 2 channel and 4 channels
amps are pretty cheap, probably the same amount you'd pay for a cd player. just my 2 cents.plus i'll take the
equalizer/crossovers on an amp (and via smartphone)over a cd player ANY day
something like this