Given that the source signal sets the foundation for the final sound quality; garbage in-garbage out, I believe you would be far better off with going digital straigt into the Panasonic. There is no DAC conversion until at the speaker output, and I believe you would get far cleaner sound. Even in analog comparison, I would expect the Pannie to outperfrom any $200-300 Rotel or Marantz receiver.
Good luck
Good luck