RDL RU-MX4 4-Channel Microphone Line MixerThe RU MX4 is the ideal choice in many applications where a combination of balanced mic and or unbalanced line level signals needs to be mixed. Balanced connections use XLR connectors. Unbalanced signals are coupled through phono jacks. Each of the four inputs can accept either a balanced XLR mic or an unbalanced line level input. 24 V phantom is individually switch selectable for each mic input. The unbalanced phono jack LINE OUTPUT from one RU MX4