Garrett AT Max Jase Robertson Signature Edition Metal Detector

The Garrett AT Max Jase Robertson Signature Edition is the camouflage AT Max from the Duck Family Treasure TV series, and Garrett's package pairs it with a 6 x 11 inch DD Viper searchcoil, Garrett MS-3 Z-Lynk wireless headphones and a Duck Commander duck call with lanyard. The AT Max runs at 13.6 kHz and is waterproof to 10 feet (3 meters). We recommend it to experienced coin and relic hunters who want a waterproof detector with wireless audio and substantial control.

What is in the box with the Garrett AT Max Jase Robertson Signature Edition

Garrett's standard contents for the AT Max Jase Robertson Signature Edition (Garrett part 1142023)

• Garrett AT Max Jase Robertson Signature Edition detector in camouflage finish, with built-in Z-Lynk wireless transmitter
• 6 x 11 inch DD Viper searchcoil with Viper coil cover
• Garrett MS-3 Z-Lynk wireless headphones
• Duck Commander duck call with lanyard
• Four AA batteries
• Owner's manual

About the Jase Robertson Signature Edition

Garrett describes the Jase Robertson Signature Edition as a camouflage version of the AT Max, as seen on the Duck Family Treasure TV series. Its electronics and specifications follow the AT Max: 13.6 kHz, eight sensitivity adjustments, 44 iron discrimination segments, a 0 to 99 target ID, four search modes with Pro audio and three tone levels, a 43 to 56 inch length and 3.03 lbs (1.4 kg). The 6 x 11 inch DD Viper searchcoil on this edition is a narrow coil for target separation in trashy ground and tight spots among rocks, roots and crop stubble, and it fits only Garrett AT detectors. See our metal detector search coils.

About the Garrett AT Max

The Garrett AT Max combines the familiar AT series design with extra convenience and ground handling features. Garrett calls it its most powerful all terrain, single-frequency detector: it runs at 13.6 kHz, with built-in Z-Lynk wireless audio, a backlit display, adjustable ground balance and a housing Garrett rates fully waterproof to 10 feet (3 meters).

What we like most about the AT Max is its true All Metal mode, together with the waterproof build, built-in Z-Lynk wireless audio and the extra ground handling features it adds over the 15 kHz Garrett AT Pro. We would choose it for serious all-terrain detecting when wireless audio and All Metal operation matter.

Garrett AT Max search modes and key settings

• Four search modes, all with Pro audio: a true All Metal mode plus three discrimination modes (Custom, Coins and Zero), with three audio tone levels. All Metal responds to both ferrous and non-ferrous targets, so you hear iron and junk as well as good targets.
• Iron discrimination and Iron Audio: iron discrimination adjusts from 0 to 44, and Iron Audio works in all four modes, including All Metal. Some iron discrimination must be set for Iron Audio to work.
• Ground balance: automatic and manual, with 175 points of resolution and an automatic Ground Balance Window that accommodates a broader range of ground around the selected balance point. Our metal detector technologies guide explains how modern detectors work.
• Sensitivity, threshold and frequency adjust: eight sensitivity levels, an adjustable audio threshold and four minor frequency adjustments (F1 to F4).
• Display: a 0 to 99 digital target ID on a backlit screen.

Z-Lynk wireless audio on the Garrett AT Max

The AT Max has a built-in Z-Lynk wireless transmitter that syncs to the Garrett MS-3 Z-Lynk wireless headphones in the box. Z-Lynk is designed for low-latency audio, and Garrett lists the delay between the detector and the headphones at 17 milliseconds. If the link drops, the AT Max searches for the receiver for 30 seconds. Expect 15 to 25 hours from four AA batteries without wireless headphones and 10 to 20 hours with them.

Water and beach hunting with the Garrett AT Max

Garrett rates the AT Max fully waterproof to 10 feet (3 meters). The wireless headphones are not waterproof: Garrett rates its MS-3 Z-Lynk headphones for protection against light rain and says they should never be submerged, and for underwater detecting Garrett specifies its waterproof headphones. For someone who mainly searches saltwater beaches, we would recommend the Garrett Vortex VX7 or Garrett Vortex VX9 instead. See our waterproof metal detectors.

Where the Garrett AT Max works well, and where it does not

Coin and relic hunting suits the AT Max best, for experienced detectorists who want a waterproof detector with wireless audio and substantial control. See our relic and treasure metal detectors. For dedicated small-gold prospecting, we would point you to the Garrett Goldmaster 24K instead.

Garrett AT Max coil, batteries and build

Garrett's standard AT Max uses an 8.5 x 11 inch PROformance Double-D searchcoil, and the Jase Robertson Signature Edition carries the 6 x 11 inch DD Viper listed above. Garrett lists the detector at 3.03 lbs (1.4 kg) with a stem adjusting from 43 to 56 inches (1.09 to 1.4 m). It runs on four AA batteries, installed at the factory; alkaline or rechargeable cells work, and lithium cells are fine only at 1.5 V per cell, because Garrett warns that 3.7 V lithium cells damage the detector. Our coil guide explains what coil size and shape change.

Getting started with the Garrett AT Max

On an older farm field where targets may be relatively deep, we begin with a stable ground balance and sensitivity, then use All Metal mode to investigate faint responses. The settings worth learning first are ground balance, the Ground Balance Window, All Metal mode, threshold and Iron Audio. A common mistake is assuming maximum sensitivity always gives better usable depth: in difficult ground, excessive sensitivity can make faint signals harder to interpret.

Garrett AT Max Jase Robertson compared with the ACE Apex Jase Robertson

Garrett also makes an ACE Apex Jase Robertson Signature Edition. It adds Multi-Flex multi-frequency, Multi-Salt and a built-in rechargeable battery, but its control box is rainproof rather than submersible, while the AT Max version is waterproof to 10 feet (3 meters) and has a true All Metal mode. The differences below come from Garrett's published specifications.

Garrett AT Max Jase Robertson Signature Edition specifications

Garrett covers the AT Max with a 3-year warranty; Garrett's MS-3 Z-Lynk wireless headphones carry their own 2-year limited parts and labor warranty.

For our full Garrett AT Max guide, settings advice and comparisons, see the Garrett AT Max collection.