this amp accepts dual 4 guage power and dual 4 guage ground... internal fuse.. it can draw up to 300 amps of current.so hope you have a fairly nice power supply... it will do 2400 rms at 2 ohms. and 1200 rms at 4 ohms... i was running this amp at 2 ohms on a 160 amp alt, 2 batteries and fried my alt after 6 months....