The DPA-AMIX accessory card is designed to work in conjunction with DPA Series amplifiers that include a rear panel accessor card slot. The unit features 4 inputs, two mic/line inputs and two auxiliary line inputs. The mic/line inputs are user selectable and include Phantom power, 120Hz Hi Pass filter and a variable limiter on both inputs. The two auxiliary inputs feature a mono active summing circuit that gives the ability to connect two stereo sources to the amplifier simultaneously. All inputs have separate level controls and signal and clip LEDs. Features 2 Balanced Mic / Line Input 2 Summed Mono or 1 Stereo or AUX Line Inputs Switchable 24V Phantom Power 2 Variable Input Limiter on Mic Inputs Assignable 120Hz / 12dB Hi-Pass Filter for Mic / Line Inputs Recessed Level Controls Input Signal & Clip Indicator LEDs