Yep, you started an expensive hobby. Trust me I know
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Are the speakers 200rms each? Is so, thats ridiculous. Remember to add whatever the HU puts out also. I would just get 1 amp that shoots out 60x4 RMS. 200x4 (I don't even know if they make and if they do its probably hella expensive) is just insane. If you would put your HU on volume 1 it would be more than enough with 200x4.