I'm one of the lucky (?) guys who managed to get a new MacBook Pro 2016 (the version that introduced the Touch Bar).
This MBP model does not have a boot chime by default.
There are documented ways to enable it, specifically going to Terminal.app and typing in:
sudo nvram BootAudio=%01
Unfortunately for me, this fix does not work on my own machine. Other people have noticed this as well. My guess is that it's a firmware fix or enhancement that got rid of
BootAudio as an option.
Does anyone know a different option to re-enable the startup chime?