CXA043 four-channel audio extender box has four XLR-F inputs and four XLR-M isolated outputs，The CXA044 has four direct XLR-M outputs and four isolated XLR-M outputs. Both transmission boxes have RJ45 network connector and grounding switch. Using a network cable instead of a four-way audio cable, you can transfer four channels of audio signals by simply connecting a shielded Cat5 Ethernet cable between the two transmission boxes, and provides phantom power for microphone through direct output. The two units isolation transformer, which eliminates the problem  are equipped with audio of AC noise caused by grounding circuit. The Cat5 Ethernet cable transmission is widely applicable lightweight and economical, saving cost and making wiring much easier.