okay here it goes. say i bought a head say a ampeg b2r 350 watts @ 4 ohms. does that mean the amp puts out 350 watts x 4? so say 1400 watts if my math is correct? because i only need like 200-300 watts to power a small 210he ampeg cabinet. i dont understand this stereo and bi-amp and bridging and pre-amp and power amp stuff. im a total newb to equipment and i dont got money to waste on buying something accidental lol. i wanna understand this stuff before i get one.