Feature: 1. 10-channel amplifier: With 10 stereo high-power amplifier sections. Each output has individual volume knobs that can individually control different headphones or speakers. Portable durable metal case,black appearance,metal texture. 2. Equipped with 12V power adapter: It has protection functions such as overheating protection/overvoltage protection,so there is no need to worry about potential safety hazards when using the headphone amplifier. you with a sound experience. 3. sound quality: The driver chip adopts high-quality NJM4556A,which has voice performance,and can the best sound quality even when used at the same time. 4. Compatibility: 10-channel stereo headphone amplifier,each channel has output level control,compatible with 3.5mm and 6.35mm headphones (requires 3.5mm to 6.35mm adapter). 5. Applicable scenarios: Widely used in studios,,recording studios,conference recordings,etc. During recording,up to 10 people can listen to the main mix in the recording studio. Specification: Input Type: IN (VOICE IN) Output Type: OUT (VOICE OUT) Built-in Battery: No Type: Home Amplifier Model Number: Headphone amplifier Driver chip: NJM4556A Quiescent current: 85mA Gain: 12dB Output impedance: 16-600 ohms Input Impedance: 10K Input and output : 3.5mm Working power: DC12-24V Size: 23 x 5 x 3cm/9.06 x 1.97 x 1.18in Plug Type: EU Plug Voltage: DC12V Material: Metal colour: black Package Contents: 1 x Headphone Amplifier 1 x Audio Cable(Note: Random color,not accept the specified color.) 1 Adapter Only the above package content,other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.