Features 1、True Showing: 10 channel headphone amplifier makes the sound better, clear, and show the ture sound. 2、High Level Sound Field: 10 channel headphone amplifier adopts high level of sound field, sound position, and detail in all aspects. 3、Output Level Control: Stereo headphone amplifier is with output level control for each channel and can be independent power supply for headphones. 4、Compatibility: Stereo 10 channel headphone amplifier is compatible with 3.5mm headphones and can be used with 12V power adapter. 5、Compact and Portable: 10 channel headphone amplifier is compact and portable and can recharge for 10 headphones. Specification Item Type: 10 Channel Stereo Headphone Amplifier Material: Aluminum Alloy Driver Chip: For NJM4556A Static Current: 85mA Gain: 12dB Output Impedance: 16-600Ω Input Impedance: 10K Stereo Input And Output Interface: 3.5mm Package List 1 x Cable 1 x Headphone Amplifier (Button Random)