THe A6004T shouldn't need anything heavier than 8awg unless you're planning on mounting it 30 feet away from the power source //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif
You need positive power and negative ground cables run to the amp, you need RCA interconnects to bring the signal from the source to the amp, you need a remote turn-on lead from the source to tell the amp to turn on and off, and you need speaker wire from the amp to the speakers it is powering.