I have a pair of Bluetooth headphones (specifically MEElectronics Matrix) that has a volume control with something like 16 different steps. On my Nexus 7 (2012, 4.4.2) and LG L9 (4.1.2) I usually have the media volume of my device on full, and have the headphones volume set between 2 and 4. This is a nice quiet volume.
When I'm connected to my Moto G (4.4.2), the volume control on the headphones is linked to the media volume of my device (they aren't seperate levels anymore). The problem with this is that now the quietest I can listen to my music (with the volume set to the first stepping on my phone) is slightly too loud for a quiet environment.
If anyone knows of an app, mod, or other solution that will allow me to seperate the volume setting between my device and my Bluetooth headphones, I would really appreciate it.