Low volume on Bluetooth / iphone

just got my new 2016 4 and set up the Bluetooth with my iPhone 6. Seems like the volume is very low- like I can't even hear my tunes until the vol level is up to almost 40!. Haven't tried any other sources yet, but read off different sources being at very different volumes in earlier models.

I had a gen 2 with an iPod kit ( hardware) and the volume was great! That one had BT phone interface and the volume there was also fine. Anyone else have volume issues?

Also, do I need the Entune app for anything if I am uninterested in the included apps like slacker, Pandora, iheartradio, etc?

Thanks all!