Garrett AT Pro Review: What the 10 Foot Rating Does Not Tell You

Information that a number throws away. Most machines report a target as a tone band plus an ID, so a faint deep coin and a loud shallow one in the same band sound identical. Proportional audio varies the response with signal strength, so the machine tells you about size and depth as well as conductivity, and Tone Roll lets you hear a target sweep through its range rather than land on one note.

That is why experienced AT Pro owners talk about the machine in terms of listening rather than reading. Combined with 40 levels of iron discrimination, it gives a careful operator a way to work iron-heavy relic ground that a coarser machine cannot match at this price. It also means the machine rewards practice more than most, which cuts both ways: the learning curve is real, and the ceiling is high. The target ID chart covers what the numbers can and cannot tell you alongside that audio.

Published figures only. Garrett publishes less about this machine than its competitors do about theirs, which is itself worth weighing.

These are two different specifications and confusing them is the most expensive mistake a beach buyer makes. A rating describes what keeps water out of the housing. Performance in salt describes whether the electronics can find anything once it is there.

Garrett publishes the AT Pro as fully submersible to 10 feet, and that is true and useful and describes water ingress only. It means the housing keeps water out. It says nothing about whether the machine can find a ring in wet salt sand, and a single-frequency VLF machine largely cannot. Sea water conducts, so the ground itself reads as a target, and with one frequency the processor has no way to separate the salt response from the target response. In practice owners hunting salt with this machine drop sensitivity until it is stable, which costs the depth they bought the machine for.

This is not a defect, it is a category. The AT in the name means all terrain, and the machine genuinely handles rain, mud, streams, ponds and lakes, where fresh water does not conduct the way salt does. Buy it for inland dirt and fresh water and it is excellent. Buy it for a salt beach and you have bought the wrong tool, and no setting fixes it. The frequency chart explains why simultaneous multi-frequency exists at all.

The second weakness follows from the first: the included MS-2 headphones are wired but not submersible, so actually using the 10 foot rating means buying Garrett Submersible Headphones at $149.99. And Garrett publishes neither an operating frequency nor a weight for this model, which makes like-for-like comparison with a Minelab or a Nokta harder than it should be at this price.

Durability is the loudest theme. Published owner reviews commonly come from people running the same machine for many seasons in conditions that would have finished a splash-resistant detector, and Garrett manufacture in the USA with a long-standing parts supply behind it. The second theme is the audio: owners describe learning to read targets by sound in a way that transfers to no other machine, and a sizeable number who moved to newer multi-frequency detectors report missing the proportional response.

The consistent complaints are the salt limitation, the weight of the standard configuration on long hunts, and the headphone connector arrangement. Owners working iron-heavy sites almost universally recommend a smaller coil, with the Garrett 5 by 8 DD PROformance Coil at $164.95 the usual choice for working between nails, and NEL Hunter 12.5 by 8.5 Coil for AT Pro the usual choice for covering open ground. That aftermarket depth is one of the real advantages of buying into a platform this established.

Buy it if:

• You hunt inland dirt, pasture, fields and fresh water rather than salt.
• You hunt relic ground full of iron and will use 40 levels of iron discrimination properly.
• You want to learn to read targets by ear, which this machine teaches better than most.
• You value a deep aftermarket coil range and long parts support.

Skip it if:

• You hunt salt beaches or surf. Buy multi-frequency, such as the Equinox 700.
• You want wireless audio, which the AT Max adds.
• You want a current-generation Garrett, which is now the Vortex VX9.
• You want published weight and frequency figures before buying.