Targa 12kz Z Series 6000w Rms Digital Monoblock AmplifierDescriptionFrequency Response: 20Hz – 300Hz Efficiency @ 4 Ohm : 90%< Signal to Noise: 100dB Damping Factor: 200< Crossover Slope: 24dB / Oct Low Pass Filter: 35Hz – 250Hz Subsonic Filter: 10Hz – 50Hz Bass Boost: 0-9dB Phase Shift: 0-180 Master/Slave Connection Remote Control 4 Ways Protection: DC Offset Speaker Short Thermal Voltage protection Runs 2 x Competition subs