Using the Drawmer DL241 Dual - Channel Auto Compressor is easy. First, connect it to your audio system using appropriate cables. Then, plug in the correct power supply to turn it on. Adjust the settings according to your audio source and desired compression effect. When using, make sure the power supply voltage matches the device's requirements to avoid damage. For maintenance, keep it in a dry and clean place. Wipe the exterior regularly with a soft cloth. If you encounter any problems, consult the user manual or contact customer support.