I was about to buy this hybrid 3000 watt pre-amp but will i also need to buy a power amp as well? Here sis the link to the hybrid i want to buy. Amazon.com: Pyle P3001AT 3000W Hybrid Pre Amplifier with AM/FM Tuner: PYLE PRO: Electronics i just need to know if it is a stand aklone and will give me 3000 watts of music power or if i must also buy a power amp as well?