![4 Channel Headphone Amplifier Stereo Audio Amp](https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)
How to connect;
1. Before use, please turn off all the volume to the minimum, then connect the signal line, and then connect the power supply
2. 16Ω, 22Ω, 32Ω, low resistance headphones please pay attention to the appropriate volume, a single output volume is too large over 150 mW, there will be distortion, sound quality will be numb, unclear phenomenon
3. The input audio plug must be a three-segment stereo connector
4. The input line does not support 4 connector lines with MIC function. If 4 plug signal lines are used for input, abnormal human voice will occur.
5. 2 plug input lines are not supported. There will be a unilateral, or silent phenomenon
6. Please turn off the volume for the unused output