1、[Stereo Headphone Amplifier] This headphone amplifier is suitable for studio and stage applications, providing high sound quality even at maximum volume, ensuring an immersive listening experience. 2、[8 Outputs 1 Input] This headphone amplifier features 8 earphone output channels and 1 input channel, allowing multiple users to listen simultaneously. 3、[Independent Volume Control] Each output channel on the headphone amplifier has its own independent volume control for personalized sound experience. 4、[High Performance Operational Amplifier] The headphone amp is equipped with low noise 4580 operational amplifier, ensuring clear sound. 5、[Metal Shell] The earphone amplifier adopts sturdy metal shell, ensuring durability, with 6.35mm stereo input and output interfaces, compatible with various sound devices. Item Type: 8 Channel Headphone Amplifier Material: Metal Input: 6.35mm Stereo Output: 6.35mm Stereo Earphone Output Parameter: 1/8 Inch TS Connector, Stereo Earphone Impedance: Approx. 80Ω Power Supply: DC 12V Power Supply Center Positive Negative Poles Size: Approx. 19.7 x 5.8 x 3.2cm / 7.8 x 2.3 x 1.3in 1 x 8 Channel Headphone Amplifier 1 x Supply Adapter