Features: Great sound quality even at maximum output level. Excellent audio performance, with ultra-low noise operational amplifier. Ultra-compact 4-channel audio mixer Sturdy metal structure, tight connection and smooth operation knob; Mini audio mixer boast ultra-low-noise operation for outstanding audio performance. Specifications: Material:Metal 4-channel Size:Approx.147x70x24mm/5.79x2.76x0.94in Power:DC5V Input Port:6.35mm Stereo TRS/MonoTS Manual Input Impedance:10K Output Port:6.35mm Stereo TRS/MonoTS OUT2 Output Impedance:120 Frequency Range:20Hz+20KHz Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Audio Mixer 1x Power Cable (With Adapter)