01
Which one to pick
Each pick follows from the facts in the table below. Each button opens a listing for that model, and a bundle says what it adds.
Pick the AT Pro if…
You want a corded MS-2 set in the box and a published iron scale: 40 levels of iron discrimination.
Pick the AT Max if…
You want a backlit display and a published frequency. It ships from Garrett with the CS-3 Z-Lynk wireless set, but the listing we link names none, so ask the seller.
02
What sets them apart
Audio is the plain split. Garrett sells the AT Pro with MS-2 wired headphones and the AT Max with CS-3 Z-Lynk wireless headphones. The AT Pro listing we link names the MS-2 in its title. The AT Max listing names no audio set, so ask the seller what ships with it.
There is more on paper for the AT Max. Garrett lists one frequency, 13.6 kHz, plus True All Metal, three discrimination modes and a backlit display. For the AT Pro, Garrett gives no frequency and does not name its technology. Kellyco, a detecting dealer, lists it as VLF single frequency, on an LCD, not backlit.
The AT Max is a single-frequency detector too, by the one frequency Garrett lists. The AT Pro has a target ID of 0 to 99 and 40 levels of iron discrimination. Garrett names three Standard and matching Pro audio modes for it. For the AT Max, the scale is 0 to 99 and 8 levels of sensitivity, with no count of iron levels.
Neither has a published weight, and no coil size is stated for the AT Max. Both run on 4 x AA (included) and carry a warranty of 3 years.
| Spec | DetectorAT Pro | DetectorAT Max |
|---|---|---|
| Frequencies | Not published | 13.6 kHz |
| Coil | 8.5 x 11-inchPROformance, DD | Not published |
| Search modes | 3 Standard audio modes, Pro, Electronic pinpointing | True All Metal, 3 discrimination modes |
| Target ID | 0 to 99; 40 levels of iron discrimination | 0 to 99 |
| Display | LCD, not backlit | Backlit display |
| Technology | Single frequency | Single frequency |
| Waterproofing | 10 ftDetector, 3 m | 10 ftDetector, 3 m |
| Weight | Not published | Not published |
| Battery | 4 x AA (included) | 4 x AA (included) |
| Battery life | Not published | Not published |
| Warranty | 3 years | 3 years |
View on Amazon AT Pro (opens in a new tab)Affiliate link | View on Amazon AT Max (opens in a new tab)Affiliate link |
Facts from Garrett's page for each model, read Oct. 16, 2026.
03
Questions
Answered from the makers' pages, read Oct. 16, 2026.
Not on paper. Both are rated submersible to 10 ft (3 m). That rating names the detector, not the audio set.
Garrett's product page gives no frequency for it, and its manual sits behind a file-sharing link we do not read. The AT Max page lists 13.6 kHz.
We can't say. Neither Garrett product page gives a weight.
04