?Plug and Play?Do not need to download any drive,Work with mobile phone, tablet, PC, laptop, computer via data cable connected. Perfect for remote group learning or audio monitoring.(Requires power connection to use). ?Independent Volume Control Design?The independent volume button that allows you to adjust the volume for 1 device alone , and the signal won't be lost when all 4 devices are connected.When you sharing a audio with your friends, each can independently control the volume of the headphones. ?Wide Compatible?This Headphone Amplifier support any devices with 3.5 mm connectors,which allows you to connect 4 headphones or speakers simultaneously with 4 ports,such as MP3 Player,Mobile Phone,Laptop,PC,Headphones,Speakers,iPhone 6. ?Lossless sound quality?The 3.5mm Audio Amplifier is equipped with full aluminum alloy housing, which will isolation of electric interference and ensure optimum sound quality.Good conduction function, no-loss sound quality connection is suitable for share audio with your friends. ?4 Channel Stereo Headphone Amplifier?With the Cubilux Headphone Splitter 3.5mm,you can share music,movies,games with your friend or family at the same time.You can also use this splitter as a learning tool and make the most of educational resources: up to 4 kids can listen to audio without disturbing others. Great for studying in the library.