Hey guys,

I received my Air yesterday. All good so far. However, I noticed immediately that the startup sound is different from the Mavic pro and Spark I've owned. It sound like a tone or two lower, kind of sounds slower and deeper It isn't a big deal either way, but just wondering if anyone else has noticed this, or whether the sound chip on mine is slightly borked

Same here.

Its is a different sound, its a different aircraft. Mine sounds like Orac when it shutdown, only those familiar with a 1970's BBC SiFy program Blakes 7 will understand!! (Noise from a coasting cooling fan)

Yeah, compared to the P2V+, MP, and Spark; the tones are completely off.  Combined with the cold weather shake, I thought I got a dud.  Turns out, it just sounds like it has a cold all the time and gets the shakes when it's cold.