[【4 Channels & 8 Output Headphone Amp】The headphone amp has 4 channels and is equipped with 4X 1/4" and 4X 1/8" stereo headphone TRS output connector jack which support up to 8 earphones output at the same time. Each channel is designed with a volume knob. When you and your friends are sharing the audio source each channel can independently control the volume of their headphones. 【Multiple Input Jacks & Mixing Effect】This headphone amplifier has an AV stereo input jack a 1/8" input jack and a 1/4" input jack . Each input channel has a mute switch on the headphone amplifier. If you use all audio input channels together you can use the mute switch of different input channels to adjust the input of the signal. In this way you will get a different mixing experience. 【MONO/STEREO Control】This balanced headphone amp has an independent MONO/STEREO control buttons. It is easy for you to simulate the mono or stereo effect. 【Attached Mute Mixing Effect】 If you use the AV connector/3.5mm connector or 6.5mm connector to connect the audio source the three input signals will be mixed and distributed to the four output channels at the same time and you can adjust the inputs of the signals through the mute switch on the body. 【Independent Power Switch】This headphone amp has a power switch which is convenient for you to turn on/off the headphone amplifier to save energy and reduce the hassle of turning off the power. 【What You Get】4 channels headphone amplifier 5V AC power adapter RCA Audio Cable 3.5mm Audio Cable user manual our worry-free 18-month warranty and friendly customer service.]