There are some known issues with this amplifier. The front handles have been broken off and the grille is bent.

This 2-channel power amplifier is a great audio tool. To use it, simply connect your audio source to the input ports and your speakers to the output ports. When using, make sure the power supply is stable. As for maintenance, keep it in a dry and clean place. Avoid exposing it to water or dust. Be careful with the front part as the handles are broken and the grille is bent, so don't apply too much pressure on them. If you notice any strange noises or malfunctions, stop using it immediately and check for possible problems.