How to Set Volume Control Limits

[Moderator: taken from original title]
Volume control, device setup can make 2 choice, one is fixed and device volume, usually user selected “device volume” for using that device as pre-amp, so, when user make such kind selection, App should not allow output more than 50%.

Apps need upgrade ASAP , my speakers be damaged for 2 times within 6 months.

If I understand your quibble right, the feature is present already, since you can select safe volume limits to avoid such problem.

EDIT:
Here’s the link to Roon’s knowledge base article.