Boss PH2KD.4 Phantom 2000 Watt Class D Monoblock Amplifier with Remote Amplifier Class: Class D Technology: Digital Number of Output Channels: 4 Total Power: 2000 Watts Max Bridged Power @ 4 Ohms: 1000 Watts x 2 Max Power @ 2 Ohms: 500 Watts x 4 RMS Power @ 4 Ohms: 200 Watts x 4 Frequency Response: 9 to 50000 Hz Total Harmonic Distortion (THD) @ RMS Output: 0.01% Minimum Speaker Impedance in Bridged Mode: 4 Ohms Signal-to-Noise Ratio (SNR): 105 dB Minimum Speaker Impedance: 2 Ohms Variable Low Pass Crossover: 50 to 500 Hz Dimensions: 1.6875"" x 9.0625"" x 5.0625"" Bridgeable Soft Turn-On Circuit Remote Subwoofer Level Control Tri-Mode Operation Power & Protection LEDs Four-channel Phantom amplifier with Class D power supply and trimode operation Delivers 500 Watts x 4 at 2 ohms; 200 Watts x 2 at 4 ohms; 1000 Watts x 2 bridged Line and speaker level inputs with variable gain control Built-in low- and high-pass crossovers; 18dB bass boost Includes remote subwoofer level control