One digital signal processed through 2 DAC's may conflict musically together. I'd try the Marantz strickly as a transport first, thus bypassing its' internal DAC's.
Try the best connection options on both the player and processor, too. Components are truely different and each has it's best circuitry connections.
There may be an internal signal in the player or processor setting that needs a better setting adjustment through the on-screen menus, too. I'd start with the Marantz source then go to the processor for a look.
Your Marantz's output level may set be too low or high if it's adjustable.
There's more.
Try the best connection options on both the player and processor, too. Components are truely different and each has it's best circuitry connections.
There may be an internal signal in the player or processor setting that needs a better setting adjustment through the on-screen menus, too. I'd start with the Marantz source then go to the processor for a look.
Your Marantz's output level may set be too low or high if it's adjustable.
There's more.