Very simple small device, 1 input, two outputs, use a button switch to switch which output input signal goes to. Passive, all gold-plated XLR sockets, the switch is a single-pole double-throw XLR 123 pin. Optimization and upgrade: non-common ground design, switching without noise. Simple and intuitive layout of condenser/dynamic microphone signal switcher, no power supply design, can be used as an audio source, such as computer mixer sound card wireless microphone or wired microphone output signal switching or talkback switching. Quickly re-route, connect output A to stage sound reinforcement system and output B to public internal communication bus by your microphone signal. Zero latency, studio-grade balanced XLR output jack, lossless switching back and forth, simple and fast. Note: Since condenser mic requires 48v power supply, there is a large impact sound when switching condenser mic. Interface: 2 male interfaces: XLR 1 female interface: 6.5 + XLR Color: Black Material: Aluminum Alloy Package Contents: 1 x Audio switch Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.