I assume that the BS4 and Denon amp are in the same room and that the BS4 has no other speakers connected?
Re-purpose the wires in the masterlink cable either:
To connect the BS4’s aux output to the Denon’s input. Aux output is fixed volume hence volume control would only be via the Denon.
Hello and thank you for your answer 🙂
You are correct, both the BS4 and Dennon are located in the same room.
I think that the option with soldering phono plugs on to the masterlink cable will be the simplest solution and will work as intended, only the Dennon controls the volume.
The only downside is, that the signal no longer would be balanced, but maybe a good tradeoff by its simplicity.