Unlike other car audio questions, mine isnt to have the loudest system on the road, but just to be a step above the factory-installed speakers. That being said, if all i want to do is put in new front door speakers and rear deck speakers that are rated at 4 Ohms, rms 35w and peak 220w, is an amp really necessary?
(the head unit im getting is a Sony xPlod CDX-GT420U)
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