This Symetrix Solus NX 16x8 Digital Signal Processor comes without a power supply. It's a key feature to note when considering this product.

To use this Symetrix Solus NX 16x8 Digital Signal Processor, you'll need to get a compatible power supply separately. When setting it up, make sure all connections are secure. As for maintenance, keep it in a clean and dry place. Regularly check the connections to ensure everything is working properly. And always remember, this product doesn't come with a power supply, so plan accordingly.