Model: Z-3K4Number of Channels: 4Frequency Response: 20Hz - 20KHzMax Power: 3000W2 Ohm RMS Power (14.4V) Per Channel: 4 x 225W 4 Ohm RMS Power (14.4V) Per Channel: 4 x 150W4 Ohm RMS Power (14.4V) Per Channel: 2 x 450WSpeaker Impedance Range: 2-8 Ohm Input Sensitivity: 0.2V-+6VLow Pass Filt..