M2 : Great little sound interface

I use the Motu M2 as a replacement for my Tascam us 16x08 which started to loose quality in the headphone amp (left and right channels aren't exactly at the same level anymore). As I am currently working solely on my headphones, my main concern was the headphone amp. As many tests show, this interface has an incredible amp. Power over USB means it can be taken on the road easily, which is another plus.

I use this interface in two setups: one on my main computer with the DAW configured to receive inputs from the Tascam 16x08 and to output to the Motu M2, this works great (with protools).

I also use the M2 on my macbook pro 2017 and this is where things get weird... Sometimes when I turn off the interface, the macbook's touchbar turns off as well and won't boot back up. When trying to reboot the computer, it just hangs and I have to force it. This is not a major issue but it is still very annoying.