Main source of vibration is the toroidal transformer in any electronic equipment.
It is particularly sensitive to oversaturation and DC component in the AC mains, if any.
Here it is in detail:
https://sound-au.com/articles/xfmr-dc.htm
It does NOT affect the sound, it is just an annoyance.
It is particularly sensitive to oversaturation and DC component in the AC mains, if any.
Here it is in detail:
https://sound-au.com/articles/xfmr-dc.htm
It does NOT affect the sound, it is just an annoyance.