Orion ZT2000.1D ZTREET Series 1-Channel 2,000W Max Class D Monoblock 1-OHM Stable Car Audio Amplifier with Remote Bass Knob/FREE ALPHASONIK EARBUDS ORION ZTREET CLASS D MONO CHANNEL 1 OHM STABLE AMPLIFIER RMS Power Rating: 4 ohms: 240 watts x 1 channel RMS Power Rating: 2 ohms: 325 watts x 1 channel RMS Power Rating: 1 ohms: 500 watts x 1 channel Frequency Response: 10Hz-400Hz / Signal to Noise Ratio: 93dB Class D Mono Car Audio Amplifier 1800W Max Power 500 X 1 @ 4_ 900 X 1 @ 2_ Thermal Management System