I have something strange with the volume control of the NAD C658. Since that last Roon update the volume on the C658 only goes to 80% on the front display of the C658 even if Roon volume slider is set to 100%.
This is a 20% loss of power on all the volume output of the NAD C658.
My power amp was off while I was trying the maximum volume test.
I have set this for audio volume
Min = 0
Max = 100
Comfort zone = 50
Anyone with the C658 (3.8.13) and Roon (v1.7 build 571) can test this behaviour ?