The small condenser mic element used in the EQ microphone are cheap and have
limited bandwidth... Yes, they can go 60-14kHz.. but the roll-offs @ each end are significant.... How the EQ system works depends upon the DSP processor and resources, intelligence/experience of the software creation team. But then again what is the resulting final transfer function and how does it sound?
Note that I have sourced the EQ mic for certain major audio brands/projects, plus having some patents in the field... Measuring/adjusting delays and levels are 1 thing but fixing certain room/acoustics is a whole different challenge... But its impact for
unit sales and marketing fluff are very significant...
Just my $0.02...