This Crown CTs 600 power amplifier comes with a correct power supply, ensuring stable performance. However, it has a minor cosmetic issue: there is tape residue on the front panel.

Using this Crown CTs 600 power amplifier is easy. First, connect it to the correct power supply that comes with it. Make sure all the connections are secure. When you turn it on, you'll be able to power your audio system effectively. As for the tape residue on the front panel, it doesn't affect the performance but you can gently clean it with a soft cloth if you want. For maintenance, keep it in a dry and cool place. Don't expose it to extreme temperatures or humidity. And remember to turn it off when not in use to save energy and prolong its lifespan.