I generally assume that the development team for the c220 is different than for the TC40 or C320WS (perfect sound) , C210 and C200 (good sound). It would be more logical to cooperate with them so...

Naturally, if we are shown the power consumption, then the outlet knows about the voltage and current strength. But for some reason, they categorically do not want to at least show the current...

I think it's better to turn to the development team for help, who were able to make a perfect and crystal-clear sound for the TC40. Or who wrote for C320WS and C210 - where is the same good sound.

Да, и эта прошивка - с отличнейшим звуком, у меня лично - не сразу почему то звук стал отличным. Прошивка - прилетела - поставилась, перезагружал несколько раз, но камера была глухая. Но, где то на...

Yes, indeed - with a quiet sound source - trouble, strong distortion. It's not entirely clear, apparently different teams are working, with difficulty - but we managed to achieve the perfect sound on...

At least voltage monitoring. Always knowing the voltage and power at any given time - you can get the current strength