The HPA-DAC2 accessory card is designed to work in conjunction with HPA Series 2-channel amplifiers. The HPA-DAC2 is a 2-input Dante™ receiver that features digital audio transportation over standard IP networks. The HPA Series 2-channel amplifiers come standard with two balanced line inputs and an accessory card slot to add an additional 2-inputs, giving the amplifier a total of 4-inputs. Analog Input 1 and Dante™ Input 1 are isolated from each other and are electronically summed together forming a mixed output. Both Input levels to the amplifier channel are controlled by the Ch-1 level control. Channel 2 inputs are configured the same as Channel 1.