Using this BSS BLU-BIB 8-channel input expander is easy. First, connect the correct power supply to the device. This will give it the energy it needs to work. Then, connect your audio sources to the input channels. You can use it to expand the number of audio signals you can handle. When using it, make sure the power supply voltage matches what the device requires. Don't expose it to extreme temperatures or wet conditions. To keep it in good shape, clean it regularly with a soft, dry cloth. Avoid using harsh chemicals as they might damage the device. That's all you need to know to use and take care of this great product.