Park1-multi is weighted towards lower frequencies. For me, I always hunt in Park1 - Multi unless there are mitigating factors such as emi. I may then try F2- Multi or Park1 - 15khz.
Park1 for me hits the hardest and deepest on high conductors and out of all other modes the best and most clear audio report. Even with mid-conductors it does quite well.
Park2-multi is weighted towards higher frequencies. For me, Park2-Multi or single frequency is useless. The first year I owned the Equinox, I performed many many tests on real world, unknown targets. My results? Park2 always struggled on identifying targets and had weaker if you will, “wishy washy” TID on items that weren’t even deep in the ground. I’m talking 3-4” and audio wise, (in 50 tones) reported “lower” high tones then park1- Multi would report.
For me I stick with Park1-Multi, leave GB at 0, F2iron bias-0, recovery speed 4, 50 tones, and now that I truly am understanding the equinox much more, I keep my sensitivity maxed out at 25. I also scan very slow.
My advice: as you gain more experience, increase the sensitivity as high as possible. I mainly used a setting of 23 ever since it was released. Now? I use 25. Amazing things will start happening when you use high sensitivity but don’t rush getting there. Listen extremely close and learn what that machine is telling you.
Good luck and keep us posted.