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JL Audio XD400/4: 4 Channel Class D Full-Range Amplifier 400 Watts
400W 234 Channel Amplifier
State-variable 12dBoctave Butterworth with continuously variable cutoff frequency selection from 50-500 Hz Configurable as Low-Pass or High-Pass Defeatable
75W RMS x 4 4 ohms
100W RMS x 4 2 ohms
150W RMS x 2 8 ohms