The Harrison D510mx Mixer Interface is designed to integrate with the D510r 500 Series rack, transforming it into a 10x2 analog summing mixer. It supports up to eight 500 Series modules along with two additional analog inputs, providing individual level and pan control for each channel. Dual independent headphone outputs with blend control allow flexible monitoring, while dedicated main mix output and routing options enable customized signal flow. The D510mx is compatible with optional D510dante and D510ua/USB interface cards, supporting both analog summing and hybrid analog-digital workflows within a compact 3U rack format.