EDBX200.4-E1 | EDGE DBX Series 4 Channel 1600 watts AmplifierThe DBX Series amplifiers have some fantastic new unique features, The New EDGE heatsink has progressive T bar fins promoting heat dispersion to keep the amps cool. The 2 and 4 channel class AB models feature an extended set of filters with the HPF up to 11kHz and the LPF to 4kHz giving much more control of your speakers than the average amplifier . The all new DBX amplifiers also feature internal fan cooling to keep temperature low when the volume