I need to limit maximum volume on Volumio 1.41


I’ve this problem: with the web-ui, is possibile to push the volume up to 100%, but this is not a good thing for my ears and for my speakers.
I tell if exist a trick to set a maximum volume for the output, to protect the speakers.
In this manner, the tablet with the web-ui can be controlled also by my daughter.
I don’t have a hardware volume, so I really need to know if exist a manner to solve this problem.

Thanks to everyone.