Volume too high

It seems that there is still a constant issue regarding volume control when connecting to several and different devices.

In my case i have the Plantronics BackBeat Fit 3100 and the volume it damn too high. I have it in the minimum possible and i go deaf!

It should  be possible to control the devices volume independently, not being in sync. For example, i have a mp3 player (SanDisk) and when i change the volume in the plantronics i don't change the actual volume of the mp3 player, it works independently... thank god, my ears appreciate it :)

How can i fix this? If i cant, then an update of the software watch should be done, i guess.