I dropped the Ultra off yesterday and I'm getting a system installed. I have not confirmed all the componets yet but it look's like I will have 2-12" sub's, 6-6 1/2" speaker's, and probably 3 amps. The sub's we got it narrowed down to either Arc or JL Audio. The 6 1/2" probably MB Quart. Amps are probably going to use Arc. I used an Arc amp in my new system in my truck and it kicks ass! Not sure if I'm going to upgrade the head unit in the boat or not. I have a Pioneer in it now. If I do we are going to either use a Clarion or MB Quart marine head unit w/wired remote's on the driver's side & another back on the swim step. It should be done in a couple week's. I can't wait.