1. SOUND AMP: 10 channel stereo headphone amp output  control per channel, compatible with 3.5MM and 6.35MM headphone (3.5MM to 6.35MM adapter required). 2. SWITCH AND OUTPUT: Designed with power switch and 3.5MM headphone output, which can power to 10 pairs of headphones and up to 10 independent volumes, ideal for meetings. 3. 10 CHANNEL STEREO: Contains 10 independent stereo high power amp sections for maximum sound quality even at maximum volume, which has excellent  performance. 4. APPLICABLE SCENES: Adopt DC12V 1.5A power supply, convenient and stable in connection, widely used in studios, stages, recording studios and conference recording situation, etc. 5. ALUMINUM ALLOY: Using aluminum alloy material, which has light weight, good heat dissipation and less interference, corrosion resistance and wear resistance, has a long service life. Specification: Item Type: 10 Channel Headphone Amp Model: AU HP10 Material: Aluminum Alloy Driver Chip: NJM4556A Quiescent Current: 85mA Gain: 12db Output Impedance: 16-600 ohms Input Impedance: 10K Input and Output Jack: 3.5mm Working Power Supply: DC12V 1.5A power supply How to Use: 1. Take the product out and plug it in 2. The input end is connected to the sound source 3. The output end is connected to the earphone, and the volume of the sound can be adjusted by adjusting the knob corresponding to the output end. Package List: 1 x Headphone Amp 1 x  Cable