Topic: Gain difference with iPad Pro vs MacBook Air?????
When I plug in USB-C cable to connect iPad Pro to (the USB port of) ADI-2 DAC FS, I have to set the volume level to -30db for the same music (Amazon Music) and same headphones (HD800S), as I use with MacBook Air at -20db, via the same cable.
What accounts for this?
On the surface it seems that digital output from iPad/MacBook should not be carrying gain markers, but ....
Obviously not an electronics expert, so please be gentle.