Hey what's up... does anyone know what does ''self regulated volume control'' mean?

I suspect this is what is more commonly called AGC, or automatic gain control. This self regulating amplifer stage compensates for incoming signal strength (stronger input = less amplification) so that the output is "regulated" at a near constant level.

However, in these days, marketers are allowed to say anything to sell a product, so "self regulated volume control" could mean anything at all.