1. 3.5mm headphone + RCA audio switcher, allowing you to connect four audio sources (such as host, DVD player, CD player, VCR, and TV box) to a single output (a set of speakers or headphones), thus achieving seamless connection of multiple devices (can be used as 1 input 4 outputs in reverse, switch one output)
2. Four output devices are connected to a device such as a speaker or headphones with 3.5 audio + RL analog audio interface at the same time, and the operational amplification brings a more realistic live sound experience
3. Support output devices and playback devices with 3.5 + RL audio interface, plug and play
4. The metal shell is sturdy and durable, with fast heat dissipation and longer service life
5. Suitable for multimedia teaching, advertising display, home theater, TV store,e and other scenarios
6. Power supply: no power supply required
7. Interface: 3.5mm + RL
8. Size: about 141 x 74 x 39mm