I think the AT PRO was designed and intended for relic hunting and shallow fresh water as Garrett has stated.
Using it as such and even coin shooting in the school yard and tot lot it will perform with the best of them.
In the dry sand and using the Standard Mode I did not experience the noise and falsing another said he experienced.
On dry sand (fresh or salt) it works as expected in the Standard Mode. (haven't had time to really evaluate the Pro Mode)
It detects as deep in the sand as would be expected and it wont miss a coin or ring if you pass the coil over it.
The deepest target so far has been a 1/4oz lead fishing weight down about 10" and that was a very solid signal.
It is good quality construction on par with the Fisher F75 and has optional settings for the more experienced to use.
The auto ground balance is fast and accurate but there is a manual GB mode.
The tones are crisp and clear ... easy to pinpoint a coin without switching into that mode.
The Iron Audio lets you hear the iron content of a target and makes it easy to ID a steel bottle cap.
Broken up signals, raspy sounds, one way reports, are all indicative of a undesirable object such as a nail or piece of iron.
Sometimes you will get a high tone one way and a med tone the other way. Switching to pinpoint mode there is nothing there.
Dont even bother digging that target ... it is a piece of iron or nail.
Coins, rings, foil, pull tabs, small jewelery, will all have a solid repeatable med or high tone.
With the Iron Audio on you will hear the iron content of a steel bottle cap.
With it off you will get a med or high tone as if it were a pull tab or coin.
On the salt water soaked sand I could not get it settled down enough to make it usable.
Tried manual GB of 20, 15, 10, 5, and 0 with all combination's of sensitivity ... no effect on the falsing and noise.
Perhaps someone else will find a setting that will work but in the 30 minutes I tried I could not find one.
Garrett has never said that it would work in wet salt sand so I cant fault the machine.
Submerged in the shallow salt water it might settle down ... I dont know as I did not get into the water to try it.
If wet salt sand is what I wanted to hunt I would use the Garrett Infinium or Minelab BBS or FBS detectors ... both are heavier and more expensive.
I need to mention the buttons ... Garrett did a fantastic job on them.
Great feel ... they are crisp and clean when you press one.
Not the mushy, rubbery, feeling some buttons like that have.
There you are ... honest, no hype, no hate, no tall tales, put downs, or build ups ...
Just exactly how I find my new AT Pro to work at the beach here in Corpus Christi, Texas.