You’ll find the AT Pro operates at 15 kHz for balanced coin and relic hunting at $552, while the AT Max runs 13.6 kHz with wireless headphones and advanced 175-point ground balancing for $760. The AT Gold‘s 18 kHz frequency targets small gold nuggets in mineralized soil. All three models offer 10-foot waterproofing, but they differ markedly in discrimination levels (40-44), search modes (4-7), and battery life (15-40 hours). The comparison below breaks down how each detector’s specialized features align with specific hunting conditions.
Key Takeaways
- AT Pro (15 kHz) balances depth and sensitivity for coins/relics; AT Max (13.6 kHz) prioritizes depth/saltwater; AT Gold (18 kHz) targets small gold nuggets.
- AT Max features advanced 175-point ground balancing and performs best in saltwater and highly mineralized soil (95 hot soil rating).
- AT Gold excels in extreme mineralization (85 hot soil) for prospecting but lacks saltwater capability unlike Pro and Max models.
- AT Max includes wireless headphones and 20-pixel target ID; AT Pro offers longest battery life (20-40 hours) at lowest price ($552).
- All models waterproof to 10 feet; Max provides superior discrimination (44 levels) and Tone Roll Audio across all modes.
Operating Frequency Differences Across the AT Series
The AT series employs three distinct operating frequencies—13.6 kHz, 15 kHz, and 18 kHz—each engineered to optimize detection performance for specific target types and environments.
Your AT Pro operates at 15 kHz, delivering balanced sensitivity across coins, relics, and jewelry.
The AT Pro’s 15 kHz frequency strikes an optimal balance for detecting coins, relics, and jewelry with consistent sensitivity.
The AT Max runs at 13.6 kHz, prioritizing depth on mid-to-large targets while excelling in saltwater conditions.
At the top end, your AT Gold’s 18 kHz frequency maximizes sensitivity to small, low-conductivity targets like gold nuggets.
These frequency differences directly impact how electromagnetic signals interact with various manufacturing materials in targets.
Higher frequencies detect smaller objects but sacrifice depth, while lower frequencies penetrate deeper into mineralized soil. The minimal 1.4 kHz difference between AT Pro and AT Max results in noticeable but modest variations in detection depth performance.
The AT Gold provides Tone Roll Audio for enhanced target identification, helping you distinguish between target signals based on their audio characteristics.
Each model’s user interface reflects its frequency optimization, giving you specialized control matched to your hunting objectives.
Search Modes and Audio Features Comparison
You’ll find significant variations in search mode configurations across the AT series, with the Pro offering 7 modes. The Max providing 4 preset modes, and the Gold featuring 6 modes split between Standard and Pro options.
The audio technology differs substantially: AT Pro includes optional Tone Roll Audio in specific modes, while AT Max utilizes Tone Roll Audio across all search modes with proportional audio that varies tones based on target characteristics. The AT Max’s pulse width modulation audio delivers sharp, responsive signals that provide detailed target information for improved detection accuracy. The AT Max includes wireless audio transmission capability to its MS3 headphones through built-in Z-Link technology.
All Metal mode operation also varies, as the AT Max employs True All Metal mode for maximum depth and sensitivity, delivering different detection capabilities compared to the Zero Discrimination modes found on the Pro and Gold models.
Preset Mode Options
When examining preset search modes across these three detectors, you’ll find the AT Pro offers seven modes while both the AT Max and AT Gold streamline to four.
The AT Pro’s expanded selection includes separate Standard and Tone Roll Audio variants, giving you flexibility in audio feedback styles. The Standard mode produces crisp one-tone signals that make target identification straightforward, while Pro mode offers broken audio patterns to help distinguish irregularly shaped objects. However, the AT Max and AT Gold compensate with refined mode architecture—their True All-Metal delivers maximum depth sensitivity that rivals any configuration.
You’re getting different philosophies: the AT Pro emphasizes mode variety with battery capacity supporting extended sessions, while the AT Max and AT Gold focus on specialized performance with superior coil compatibility for specific hunting conditions.
The AT Gold’s 18 kHz frequency particularly enhances small target detection in all modes, making each preset more targeted than numerous generic options. The AT Max’s capability in true all metal and discriminate modes offers enhanced sensitivity when paired with its Adjustable Threshold feature, allowing you to fine-tune detection performance across various ground conditions.
Tone Roll Audio Technology
Garrett’s proprietary Tone Roll Audio technology fundamentally changes how you’ll interpret targets by delivering proportional tones that vary as your coil sweeps over metal objects.
The AT Pro provides this feature in three of seven modes—Zero Discrim, Coins, and Custom—offering easier audio clarity for beginners.
You’ll find the AT Max takes a more aggressive approach, implementing Tone Roll across all four preset modes exclusively, eliminating traditional on-off tones entirely.
The AT Gold integrates proportional audio into three of six Pro modes, optimized for its 18 kHz frequency targeting small gold.
All three models share iron audio features that help you identify unwanted ferrous targets during your hunts.
These varying user interfaces demand different learning curves: the Pro’s selective implementation eases your passage, while the Max’s all-encompassing system requires dedicated practice to master tone interpretation and boundary sensing.
All Metal Mode Differences
- AT Max provides four presets: All Metal, Coins, Custom, Zero Discrimination, and Pinpointer.
- AT Pro focuses on iron discrimination with 40 precision levels.
- Custom mode enables parameter adjustment for specific applications.
- Zero Discrimination detects all metal types simultaneously.
- Enhanced coil compatibility expands detection capabilities across models.
- The all-metal mode boosts depth visibility for targets buried at various soil depths.
- The AT Max features increased TX transmitting power for greater depth detection compared to older detector models.
The AT Max outperforms both competitors detecting larger targets at significant depths, offering unrestricted freedom in challenging hunting environments.
Waterproofing Capabilities and Environmental Performance
All three detectors achieve identical 10-foot submersible ratings for freshwater and saltwater environments, though their implementations differ in practical application.
Each detector reaches the same 10-foot waterproof depth certification, but their real-world performance characteristics diverge in actual field conditions.
The AT Pro’s design durability centers on its waterproof housing paired with the 8.5×11 DD coil, suitable for wetlands and deserts.
The AT Max extends this protection with weatherproofing against dust and humidity, excelling in harsh conditions while maintaining the same depth rating.
Your user interface remains functional underwater with both models when using wired headphones—the Pro’s MS-2 or Max’s required wired option (wireless MS-3 works only above water).
Both handle conductive soils and saltwater beaches effectively through ground balance adjustments.
The AT Max’s 13.6 kHz frequency provides enhanced saltwater target detection.
The AT Max includes Garrett MS-3 Z-Lynk Wireless Headphones in the kit, which auto-pair with the detector to eliminate cable interference during surface-level detecting.
The AT Gold’s waterproof specifications remain unspecified in series comparisons.
Ground Balancing Technology and Mineralization Handling

Ground balance technology separates these three detectors through distinct architectural approaches to mineralization compensation.
The AT Pro employs Fast Track automatic balancing with manual override.
While the AT Max advances to a 175-point high-resolution system featuring Garrett’s exclusive Automatic Ground Balance Window™ that simultaneously balances across multiple values rather than a single fixed point.
You’ll find the AT Gold calibrated for extreme mineralization with readings reaching 85 in hot soil conditions, compared to the AT Max’s 95 and AT Pro’s 93 under identical testing parameters.
Automatic Vs Manual Balancing
The AT Max advances this capability with its Automated Ground Balance Window, spreading balance across multiple settings and achieving 95 in hot soil.
Its enhanced user interface supports deeper detection through improved ground balance mechanisms.
The AT Gold’s product durability shines in extreme mineralization, registering 85 while operating at 18 kHz for small gold recovery.
Consider these balancing advantages:
- Fast Track delivers rapid automatic adjustment
- Manual mode cancels false signals in salty conditions
- Automated Window fine-tunes across multiple settings
- True all-metal mode maximizes sensitivity
- Higher frequency enhances nugget hunting balance
Mineralized Soil Performance
When detecting in challenging ground conditions, resolution becomes the critical differentiator between the three models. The AT Max delivers 175 ground balance points, exceeding the Pro’s granularity for precise mineralization handling.
You’ll find the Max achieves superior depth on silver quarters in hot soil while maintaining stronger high-tone responses. The AT Gold dominates extremely mineralized gold fields with its 48 kHz frequency and advanced ground tracking, though it’s unsuitable for conductive saltwater environments.
The Pro offers adequate performance through Fast Track automatic balancing and 40 iron discrimination levels. Your battery options and coil compatibility choices won’t matter if you can’t properly ground balance.
The Max handles both conductive beaches and mineralized inland sites, while the Gold specializes exclusively in hot ground prospecting scenarios.
Ground Balance Window Features
While traditional detectors lock onto single ground balance points, AT Max’s Automated Ground Balance Window spreads balancing across multiple settings simultaneously—a technology that distinguishes it from both the Pro and Gold models.
This range-based approach enhances terrain adaptation by reducing false signals in severely mineralized conditions. You’ll notice the difference when hunting ground that typically masks faint targets:
- Hot soil readings reaching 95-97 with superior coil compatibility
- Saltwater beaches where conductive minerals challenge standard balancing
- Transition zones between different soil compositions
- Rocky terrain with inconsistent mineralization patterns
- Iron-laden ground producing continuous chatter
The AT Pro’s Fast Track system performs well but locks to singular values. AT Gold excels in mineralized prospecting zones yet lacks saltwater capability.
AT Max’s window technology delivers operational freedom across both environments without constant manual intervention.
Wireless Technology and Connectivity Options

Built-in Z-Lynk Wireless Technology separates the AT Max from its siblings, delivering cord-free audio transmission that the AT Pro and AT Gold can’t match out of the box.
You’ll receive MS-3 Z-Lynk headphones standard with the AT Max, eliminating tangling cords that restrict your movement across challenging terrains. Z-Lynk provides shorter signal delays than Bluetooth alternatives, ensuring immediate audio feedback during target identification.
The AT Pro requires separate Z-Lynk headphone purchases for wireless transmission, while the AT Gold lacks native wireless support entirely. These connectivity options impact your detecting freedom considerably—the AT Max’s integrated system performs reliably in saltwater environments where you’d face cord management challenges.
You’ll maintain 15-20 hours of wireless operation on four AA batteries, proving Z-Lynk efficiency doesn’t sacrifice runtime for the streamlined, unrestricted detecting experience you demand.
Iron Discrimination Levels and Target Identification
The AT Max’s 44 iron discrimination levels surpass the AT Pro’s 40 levels, delivering enhanced precision that separates ferrous trash from valuable targets in iron-contaminated sites.
You’ll gain superior target resolution with the Max’s advanced filtering, while the Pro’s Iron Audio produces low-pitched grunts identifying discriminated iron through audible cues.
The AT Gold prioritizes iron cancel features for goldfield environments.
Each model balances discrimination depth against sensitivity:
- AT Max: True All-Metal mode maintains maximum depth without discrimination loss
- AT Pro: Pro Mode Audio delivers detailed target response at 15 kHz frequency
- AT Max: 13.6 kHz optimizes high-conductive target detection with 20-pixel target ID
- AT Gold: Specialized iron check rejects hot rocks in mineralized ground
All Models: Notch discrimination filters non-ferrous targets from ferrous contamination
Price Points and Battery Life Specifications

Beyond discrimination capabilities, your detector investment requires evaluating both upfront costs and operational longevity across the AT Series lineup. You’ll find the AT Pro most affordable at $552.46, delivering 20-40 hours runtime on 4 AA batteries—exceptional value supported by strong brand reputation and user reviews.
The AT Max commands $759.99 with wireless technology premium, though battery life drops to 15-20 hours due to advanced features. The AT Gold’s pricing positions between models, optimized for prospecting with high-frequency power demands affecting runtime.
User reviews consistently highlight the Pro’s endurance advantage for extended hunts, while the Max justifies its premium through enhanced capabilities. Your choice balances initial investment against field time requirements, with battery indicators standard across all models for operational freedom.
Frequently Asked Questions
Which at Model Is Best for Beach Hunting With High Mineralization?
You’ll want the AT Max for high-mineralization beach hunting. It’s specifically optimized for saltwater conditions with superior ground balance capabilities, handling conductive sand better than the Pro or Gold. Its underwater performance remains stable in challenging coastal environments.
Can I Upgrade My at Pro With Wireless Headphones Later?
Coincidentally, you’ll find excellent wireless compatibility for your AT Pro. Upgrade options include the MS-3 Z-Lynk kit or Gray Ghost system, both connecting through the detector’s 2-pin connector. You’re not locked into wired operation permanently.
Do All Three Models Come With the Same Warranty Coverage?
Yes, you’ll find identical warranty coverage across all three models in this comparison. Each detector—AT Pro, Max, and Gold—includes the same 2-year limited warranty, ensuring consistent protection and reliability regardless of your model choice.
Which at Detector Is Lightest for Extended Hunting Sessions?
Like choosing between identical feathers, your weighing considerations hit a wall—the AT Pro and AT Max both clock in at 3 pounds in any weight comparison, while the AT Gold’s specs remain uncharted territory for extended hunts.
Are Aftermarket Coils Compatible Across All at Series Models?
You’ll find most aftermarket coils work across AT Pro, Max, and Gold models despite minor model differences. However, coil compatibility depends on matching frequency specifications—not all aftermarket options fit every detector, so verify connector type first.
References
- https://www.metaldetector.com/blogs/new_blog/garrett-at-series-comparison-at-pro-at-gold-and-at-max
- https://kellycodetectors.com/blog/garrett-at-pro-vs-garrett-at-max/
- https://www.youtube.com/watch?v=b3O_HKjNs9o
- https://www.youtube.com/watch?v=QYcBDXIkFHM
- https://www.metaldetector.com/blogs/new_blog/garrett-at-series-comparison-chart
- https://jitsi.cmu.edu.jm/garrett-at-pro-vs-at-max/
- https://metaldetectingforum.com/index.php?threads/at-pro-vs-at-max.275638/
- https://e-catalog.com/cmp/36534/at-max-vs-at-gold/
- https://garrett.com/garrett-at-pro-w-ms-2-headphones/
- https://bigboyshobbies.net/blogs/default-blog/garrett-at-pro-and-garrett-at-gold-what-is-the-difference



