Hi! When I play music from my iPod Nano 7gen, via bluetooth volume is very low. With iPhone 4s and iPad 4 volume is normal, only with my iPad Nano volume is low. I've noticed that while playing music via BT, in settings - music Volume Limit is ON, but if I enter in the menu the limit is disabled.. Can anyone help me? It's a limit or a issue of the iPod Nano BT?