Features True Showing: 10 channel headphone amplifier makes the sound better, clear, and show the ture sound. High Level Sound Field: 10 channel headphone amplifier adopts high level of sound field, sound position, and detail in all aspects. Output Level Control: Stereo headphone amplifier is with output level control for each channel and can be independent power supply for headphones. Compact and Portable: 10 channel headphone amplifier is compact and portable and can charge for 10 headphones. Compatibility: Stereo 10 channel headphone amplifier is compatible with 3.5mm headphones and can be used with 12V power adapter. 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 Package List 1 x Cable 1 x Headphone Amplifier (Button Random)