It sounds like you are overdriving the dac or the amp. At low volume the music sounds fine. When you turn up the volume does it sound harsh and distorted? Are you only using the volume on the Marantz?
Can you adjust the gain on the input to the amp? Check the manual.
As long as you leave the volume set on the Bluesound Node, the problem lies elsewhere, most likely the Marantz.
You could try using the Node's
analogue outputs plugged directly into L R analogue inputs on the amp. Leave the Topping out of the system for this experiment.
Can you adjust the gain on the input to the amp? Check the manual.
As long as you leave the volume set on the Bluesound Node, the problem lies elsewhere, most likely the Marantz.
You could try using the Node's
analogue outputs plugged directly into L R analogue inputs on the amp. Leave the Topping out of the system for this experiment.