This Sonance DSP 2-150 MKII DSP amplifier comes with the correct power supply, ensuring reliable operation. However, please note that one of the rack ears is slightly bent, which may not affect its performance but is a cosmetic issue.

Using this Sonance DSP amplifier is quite straightforward. First, connect the correct power supply that comes with it to a proper power source. Make sure the connection is secure. When installing, be careful with the slightly bent rack ear. You can still mount it in a rack, but just pay a bit more attention during the process. As for maintenance, keep it in a dry and cool place. Regularly check the power connections to ensure they are tight. If you notice any abnormal sounds or malfunctions, it's best to stop using it and consult a professional.