I've done several different builds on my bike. Had the RF punch amp before, stay away from that one, currently have a couple of power series amp which are great amps. I've also had the Arc XDI and Moto amp both of which are great. As far as speakers go I've had Polk and there ok, Focal KRC's rock but cost$$$, current using Digital Designs Vo 6.5 and their B3 horns and sound is great!
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