Gold 1 and Gold 2 are specifically designed for gold prospecting where there is medium to high mineralization, hot/cold volcanic rocks which are detectable (similar to fireplace bricks, coke, some slag) and relatively small targets of natural gold, silver, platinum, magnetite along with bits of manmade iron, foil, tin, brass and lead in the 1/4" diameter and smaller range. Usually it is not a target rich, carpet of nails, trashy park type detecting area so any hits in the -2 to +25 range are potentially beep and dig.
Gold 1 and 2 have lots of great features that most gold prospecting detectors don't normally have which can help discriminate most of the targets which aren't gold, silver, platinum, brass, lead and aluminum fairly safely and make iron targets and hot rocks easy to recognize most of the time. But it still only has 1 tone VCO audio and it won't magically just hit on gold no matter what size it is or if it is natural or manmade.
So, like tnsharpshooter said, it can become a nightmare detecting in a really target rich environment of tiny to US coin sized targets that hit in the -2 to +25 range like tons of foil, can slaw, pull tabs, bottle caps and of course manmade iron targets which all together can make a real persistent and sanity blowing audio barrage in the that numerical target range. You have to watch the screen for the response of every one of those targets too.
Jeff