Feature:1. The MH400 mixer provides a costeffective solution for mixed multiline sound signal transmission, and deeply feels the value brought by MH4002. Add 4 more keyboards or electroacoustic instruments to the mix, insert the MH400 input interface, and connect the MH400 output interface to the mixer input channel to solve the lack of mixer channels3. Despite the compact size of the mixer, the sound quality is outstanding, with an ultralow noise operational amplifier circuit4. UItracompact 4channel line mixer to achieve the highest sound quality even at the maximum output level5. The ultracompact single mixer with 4channel input and 1channel output line, each input channel can be individually adjusted in volumeSpecification:Item Type: 4-Channel Line Mixer Material: Metal Colour: BlackProduct Size: Approx. 10.5 x 5.7 x 3.2cm / 4.1 x 2.2 x 1.2inLine Input:Impedance: 4.7 KMaximum Input Level: +16 dBuLine Output:Impedance: 80Maximum Output Volume: +16 dBu.Package List:1 x Sound Mixer1 x Power Adaptor1 x User ManualNote:Precautions:1. Do not use this equipment near water.2. Only clean with dry bottom.3. Do not block any ventilation holes. Install in accordance with the manufacturer's instructions.4. Do not install near any heat sources, such as radiators, heat regulators, furnace or other equipment (including amplifiers).