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May 20, 2026 - 04:21 PM
The Garrett AT Pro offers 40 levels of iron discrimination, giving you fine resolution to separate good non-ferrous targets from iron trash at relic sites and old homesites. Combined with proportional Pro Audio, the 40-level discrimination lets you hear the size and depth of a target through tone, so you can ignore short, stuttering iron grunts and dig the clean, repeating mid-tones. At iron-heavy cellar holes and foundations, we set iron discrimination between 25 and 35, raising it only when nails dominate the site.
