Garrett AT Max Metal Detector Overview
The Garrett AT Max stands as one of Garrett’s flagship all-terrain metal detectors, designed for serious hobbyists and professional treasure hunters. Released in 2018, this detector quickly gained popularity for its combination of depth, discrimination capabilities, and waterproof construction.
Key Features and Specifications
The AT Max operates at a frequency of 13.6 kHz, making it versatile for detecting various targets from coins to gold nuggets. With an MSRP of $799.95, it sits in the mid-to-high range of metal detectors, offering professional-grade features without reaching the price point of specialized gold detectors.
Waterproof Design
One of the standout features of the AT Max is its complete waterproofing up to 10 feet (3 meters). The control box, search coil, and shaft are all sealed against water intrusion, making it ideal for beach hunting, shallow water detecting, and use in rainy conditions. This IP68 rating means you can submerge the entire unit without worry.
Wireless Audio Technology
The AT Max includes Z-Lynk wireless technology, allowing you to connect compatible wireless headphones without the hassle of cords. This feature provides freedom of movement and reduces interference from surrounding electronics. The wireless range extends up to 30 feet from the detector.
Performance in Different Environments
Beach Hunting Capabilities
The AT Max excels in saltwater environments thanks to its ground balance range and discrimination settings. The detector includes a dedicated beach mode that helps eliminate false signals from saltwater mineralization. Many users report finding jewelry and coins in wet sand conditions where other detectors struggle.
Field Hunting Performance
In agricultural fields and parks, the AT Max demonstrates impressive depth capabilities. Users consistently report detecting coins at depths of 10-12 inches in good soil conditions. The adjustable frequency helps minimize interference from electrical sources common in urban environments.
Gold Prospecting Features
While not specifically designed as a gold detector, the AT Max’s 13.6 kHz frequency makes it capable of finding small gold nuggets. The manual ground balance feature allows users to adjust for highly mineralized soil conditions typical in gold-bearing areas.
Advanced Technology Features
Digital Target ID
The AT Max features a 0-99 digital target ID scale, providing precise information about potential targets. This scale helps users distinguish between different types of metals and make informed decisions about digging. The large LCD display is easy to read in various lighting conditions.
Iron Audio Enhancement
The adjustable iron audio feature allows users to hear discriminated iron targets, helping to avoid digging unwanted items while still identifying potential good targets near iron. This feature proves particularly useful in areas with heavy iron contamination.
Fast Recovery Speed
The AT Max boasts a fast recovery speed, allowing users to detect targets in close proximity to each other. This feature proves invaluable in trashy areas where multiple targets may be present in a small area.
Search Coil Options
Standard 8.5″ x 11″ DD Coil
The AT Max comes standard with an 8.5″ x 11″ DD search coil, providing excellent coverage and depth. This coil size balances between target separation and ground coverage, making it suitable for most detecting scenarios.
Optional Coil Accessories
Users can expand their detecting capabilities with optional coils. The smaller 5″ x 8″ DD coil works well in trashy areas, while the larger 9″ x 12″ coil provides additional depth for relic hunting. All coils maintain the detector’s waterproof rating.
User Experience and Ergonomics
Weight and Balance
The AT Max weighs approximately 3.03 pounds with batteries, making it comfortable for extended detecting sessions. The adjustable arm cuff and padded grip help reduce fatigue during long hunts.
Menu Navigation
The detector features an intuitive menu system with clearly labeled buttons. Users can quickly adjust settings like sensitivity, discrimination, and ground balance without extensive menu diving.
Power and Battery Life
Battery Options
The AT Max operates on four AA batteries, providing approximately 20-25 hours of use. Users can choose between disposable alkaline batteries or rechargeable NiMH batteries. The battery compartment is easily accessible and waterproof.
Power Management
The detector includes an automatic power-saving mode that activates after periods of inactivity. The backlight on the display can be turned off to extend battery life during daytime detecting.
Comparing AT Max to Other Models
AT Max vs. AT Pro
The AT Max offers several advantages over the AT Pro, including wireless audio, higher frequency, and enhanced iron audio. While the AT Pro is a capable detector at a lower price point ($649.95), the AT Max provides additional features for serious hunters.
AT Max vs. AT Gold
The AT Gold operates at a higher frequency (18 kHz) specifically for gold prospecting. While the AT Max can find gold, the AT Gold provides better sensitivity to small gold nuggets. But the AT Max offers more features for general purpose detecting.
Real-World Testing Results
Depth Testing
In controlled tests, the AT Max consistently detected:
– US coins at 10-12 inches in moderate soil
– Larger relics at 14-16 inches
– Small gold nuggets at 3-5 inches
Target Separation Tests
The detector demonstrated excellent target separation in trashy areas, successfully identifying good targets among iron trash at depths of 6-8 inches.
Maintenance and Care
Cleaning and Storage
After saltwater use, rinse the detector thoroughly with fresh water and dry completely before storage. Store in a cool, dry place away from extreme temperatures.
Regular Maintenance
Check coil connections regularly for signs of wear or corrosion. Inspect the shaft and mounting hardware for tightness before each use.
Tips for Maximizing Performance
Ground Balancing
Take time to properly ground balance the detector in your hunting area. This step significantly improves target identification and depth.
Sweep Technique
Maintain a consistent sweep speed of 3-4 feet per second for optimal performance. Overlap each sweep by 50% to ensure complete coverage.
Audio Settings
Experiment with different audio tones to find what works best for your hearing and hunting style. Many experienced users prefer a combination of tone break and iron audio settings.
Accessories and Add-ons
Recommended Headphones
While the wireless headphones included with some packages work well, many users prefer the Garrett MS-3 Z-Lynk wireless headphones for enhanced audio quality.
Digging Tools
Pair the AT Max with quality digging tools like the Lesche digging tool or Garrett Edge digger for efficient recovery of targets.
Common Issues and Solutions
False Signals in Wet Sand
If experiencing false signals in wet beach sand, reduce sensitivity and use the beach mode. Ground balancing can also help minimize false signals.
Electrical Interference
In areas with electrical interference, try adjusting the frequency slightly or reducing sensitivity. The AT Max offers multiple frequency shift options to combat interference.
Conclusion
The Garrett AT Max metal detector delivers professional-grade performance for serious treasure hunters. Its combination of depth, discrimination capabilities, and waterproof design makes it a versatile choice for various detecting environments. While the price point may be higher than entry-level detectors, the features and performance justify the investment for dedicated hobbyists and professionals.
The AT Max continues to be a popular choice among detectorists, offering a balance of advanced features and user-friendly operation. Whether you’re hunting beaches, fields, or gold-bearing areas, the AT Max provides the tools needed for successful detecting adventures.