Quiet coffee grinder

Every electrical coffee grinder I have hear has been noisy with an irritating sound.  There is no need for this.

I once took my manual coffee grinder and my cordless drill.  Not noisy at all and it managed coffe for a table of 12.  It was maybe not as fast as a professional machine and absolutely more complex to use.  But it *was quiet*.

A 1000€ machine in a coffee shop really shouldn’t sound more than the guests.