Feature:1. Metal Material: This small headphone amplifier is made of excellent metal material, which is sturdy and can be used for a long time.2. Channels: There are 8 headphone output channels and 1 input channel, and the volume of each output channel can be independently controlled.3. Portable Design: This ultra compact stereo headphone amplifier is small in size and easy to carry around, can be used at anytime, anywhere.4. Great Performance: Even at maximum volume, this metal headphone amplifier can provide the highest sound quality for each earphone.5. Applications: This headphone amplifier is suitable for studio and stage applications. Enjoy an low noise monitor distribution and music system.Specification:Item Type: Headphone AmplifierMaterial: MetalWeight: Approx. 539g/19.0ozRecommended Maximum Impedance of Headphones: 65 to 80OhmOutput Type: LINE OUT (O OUT).Package List:1 x Headphone Amplifier1 x Adapter1 x Specification