Equinox Ground Balance
If you read between the lines on the various search modes, Minelab seems to imply that the ground balancing is done automagically, regardless of whether you do a ground grab or not.
For example:
Park 1 Multi-IQ processes a lower frequency weighting of the multi-frequency signal, as well as using algorithms that maximise ground balancing for soil, to achieve the best signal to noise ratio.
Hence Park 1 is most suited for general detecting and coin hunting.
Park 2 Multi-IQ processes
Lots of great commentary here, and I apologize for being late to the game since I was addressed specifically.
What we have at work here is something Minelab is never going to discuss in great detail. There really is some magic at work in a Minelab multifrequency detector, and for a very long time almost everyone has been missing what is really going on. The focus is always on frequencies, and more specifically transmitted frequencies. Minelab has catered to all this with their marketing tou