On the prototype it is a real bell. I'd rather not have them change the sound. That is deeply offensive to me. Real bells above the windshield back in the day, is tradition. So are the class lights and locomotive class.
What happened to dynamic brakes with the CN-GP38??...wonder if its CN specific. Also nice sounding horn in surround sound.
They did not come with any. CN's ruling grade is 0.5%. CP on the other hand can reach 2.2. It's not CN specific as they have locomotives with dynos.