This Denon DN-333XAB 6-channel line mixer amplifier with Bluetooth comes with a correct power supply. Note that the antenna is broken (as shown in the photos), and the Line in 1 knob cap is missing, but the knob still works well.

Using this Denon mixer amplifier is easy. First, connect it to the correct power supply that comes with it. Then, pair your Bluetooth device to start streaming audio. When adjusting the volume or other settings, use the knobs on the front panel. Be careful when handling it as the antenna is broken. Although the Line in 1 knob cap is missing, the knob is still functional, so don't worry about using it. To maintain this device, keep it in a dry and clean place. Regularly check the connections to make sure they are secure. If you have any other questions, feel free to reach out.