For those who worry about quality of software volume control

[abm0]

DACs can have linearity issues, which manifest as increased distortion at low digital levels. This is a potential problem when driving a DAC at very low volume.

The silver lining with that is a lot of people will take measures to stay away from the very bottom of the digital scale just because the perceptual volume differences per step become too large when you're in that region, and most people like some granularity on their volume control.