The PulseAudio PA-EXMIX Microphone Mixing Extender over single Cat5e/6 extends analog audio and microphone signals up to 300m/984ft. Mixing is done with an easy-to-use dial on the transmitting unit that is able to mix audio between the XLR and stereo AUX inputs. The PA-EXMIX also utilizes PoC (power over cable) technology so that the transmitter can be powered from the receiver with a single power supply allowing flexibility. Have more than 2 sources needing to be mixed? No problem as an additional PA-TXMIX (sold separately) can be used and cascaded over a single Cat5e/6 for even larger solutions.