NDX2 only plays low volume...and on all inputs?

[Sinewave]

Maybe this?

Variable volume in NDX 2

Is there really any drop in sound quality if I use adjustable volume control in NDX 2 ? I plan to use the adjustable volume control in NDX 2 instead of system automation as I dont use Naim’s preamp with NDX 2. I am using preamp though - not directly to power amp. The adjustable volume control of NDX 2 does provide a great convenience as I can then also control volume from same naim remote or app. I do not have to use my pre amp’s remote for volume control. When I check Naim’s support document…