Lumin uses Leedh for their volume control with their DAC’s and Streamers. It’s the best software based volume control I have used by a mile. Never had any issues with it going up or down on its own. I’ve had 3 different Lumin products, it’s worked well with all of them. Aurilac has software volume control on their streamers, DACs as well, would think most of the companies that have well built out apps offer it up, varies on how good it actually is, not functionally but from a sound quality perspective.
Good Luck,