The Hifonics Brutus BXi Series provides one of the most economical ear shattering audio power plants available on todays market. If its SPL you are looking for, then look no further. Teamed with a Zeus ZXi Series amplifier for your front and rear speakers, these Super D Class monsters might break your neighbors windows. Hifonics uses Super D-Class digital chip technology to provide you with an extremely efficient, low temperature, high amplification system that others only dream about. The Brutus BXi 1606D at 1600 Watts reference impedance 1 Ohm. 1 Ohm, thats no problem, but all of our Brutus amplifiers can run at 4 or 2 Ohms as well, for an even tighter bass response!