Regarding listening levels, on my PILIUM Alexander, my volume range typically varies between 3 and, in rare and extreme cases, 18.
On very uncommon occasions I push it to 17 and 18, and that’s mainly for analytical purposes, to evaluate how the room behaves with specific tracks that contain highly complex and dynamic passages.
In day to day listening, the setup fully engages me even at 3 and 4, especially late in the evening or at night.
My usual average listening level ranges between 9 and 12, depending on the recording and the material.
MSB DACs, provide two output modes: High / Low.
I personally prefer the High output mode, because it offers greater drive, improved micro dynamics, and a stronger sense of authority and control over the signal, all without sacrificing refinement.