The PulseAudio PA-EXMIX Microphone Mixing Extender over single Cat5e/6 extends analog audio 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 for 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! The PA-EXMIX includes two units: transmitting unit (PA-TXMIX) and receiving unit (PA-RXMIX). The transmitting unit is used to capture the audio input(s) and carries the signals over a single Cat5e/6 cable. The receiving unit is responsible for converting the audio signals over the Cat5e/6 cable to a balanced XLR and 3.5mm stereo audio outputs.