dude1782
FRF Addict
Mine sounds the same usb or Bluetooth. In your case it could be low quality music files, 192 bit rate will sound like shit with my system, i have to use 320 or it will bug me. Have you had the same phone for your last 3 vehicles?
I've had iPhones and I use Apple Music. I know other people whose phone music is quieter than the radio too. When I have the volume all the way up for bluetooth it's just loud enough and when I switch back to radio it is way too loud.