You’ll find the Garrett Ace 400 operates at 10 kHz with 40-level iron discrimination and a waterproof 8.5″ x 11″ DD searchcoil. It weighs just 2.9 lbs and runs 20-40 hours on four AA batteries. The detector features five search modes, a 0-99 digital Target ID scale, and eight sensitivity levels for depth optimization. Its adjustable stem extends from 42″ to 51″, and it includes headphones plus a three-year warranty. The complete technical specifications and real-world performance metrics await your exploration below.
Key Takeaways
- Operates at 10 kHz with adjustable sensitivity and ground balancing, optimized for detecting gold, aluminum, and other low-to-medium conductivity targets.
- Features Digital Target ID (0-99 scale) with 40-level iron discrimination and depth indicator for precise target identification and trash filtering.
- Lightweight at 2.9 lbs with adjustable stem (42″-51″), offering fatigue-free operation and approximately 27 hours of battery life on four AA batteries.
- Includes waterproof 8.5″ x 11″ DD searchcoil suitable for streams and shallow water, with excellent target separation in trashy environments.
- Comes with headphones, coil cover, padded carrying case, and three-year limited warranty, providing complete package and long-term reliability.
Technical Specifications and Operating Frequency
The Garrett Ace 400 operates at a 10 kHz frequency, which delivers enhanced sensitivity to low and medium conductivity targets including gold, lead, and other valuable finds.
You’ll appreciate the adjustable frequency feature that eliminates interference from nearby detectors or power sources through slight frequency shifts.
The detector’s ground balancing capabilities work in tandem with its 8-level sensitivity adjustment system, allowing precise detector calibration for your hunting environment.
Your control extends to the 8.5″ x 11″ DD PROformance searchcoil, which provides superior target separation and depth coverage.
The Digital Target ID displays values from 0-99 across 12 cursor segments, while the 4-segment Iron Discrimination offers high-resolution target identification.
You’re equipped with 3 audio tone levels and electronic pinpointing to maximize your detecting efficiency in any terrain condition. The Pulse-Width Modulation audio delivers sharp, responsive sound that helps you distinguish between different target types. The detector weighs just 2.9 lbs., making it comfortable for extended detecting sessions in the field.
Search Modes and Target Discrimination System
When maximizing your detection capabilities, you’ll leverage five distinct search modes engineered into the Ace 400’s discrimination system. Zero-Disc activates all 12 pixels for thorough sweeps.
While Coins Mode‘s discrimination pattern eliminates relics and trash through factory optimization. Jewelry Mode targets conductivity ranges of 33-75, capturing gold rings with mid-tone alerts while rejecting iron.
Relics Mode filters small ferrous debris, recovering lower-conductivity artifacts like lead and brass. Custom Mode delivers programmable control that retains your configurations through power cycles. Zero Discrimination mode proves particularly effective for general coin and relic hunting across diverse target environments.
The 40-level iron discrimination system integrates Iron Audio across all modes, producing distinct low tones for ferrous identification. You’ll notch out unwanted targets without sacrificing detection depth, maintaining operational freedom through precise target separation and enhanced recovery capabilities in contaminated environments. The 10 kHz frequency enhances the detector’s sensitivity specifically for low and medium conductivity targets throughout your search operations.
Display Features and Digital Target Identification
The Ace 400’s LCD interface delivers three critical information streams during target detection.
You’ll read numeric Target ID values from 0-99 on the digital scale.
Monitor coin-sized object depths in real-time through the depth indicator.
And track remaining power via the battery status display.
These simultaneous readouts let you make instant dig-or-pass decisions without interrupting your sweep pattern.
The detector operates at a higher 10 kHz frequency for enhanced sensitivity when detecting low and medium-conductivity targets like gold jewelry and aluminum pull-tabs.
The device includes four frequency channels that allow you to reduce interference from nearby detectors or electrical sources.
Digital Target ID Scale
At the core of the Ace 400’s target identification system lies a numeric scale ranging from 0 to 99, delivering precise conductivity readings that surpass basic graphical indicators in accuracy. This digital classification empowers you to make split-second recovery decisions, distinguishing valuable finds from ferrous waste without unnecessary digging.
You’ll identify historical artifacts with confidence as the scale pinpoints conductivity levels specific to various metals—copper, silver, and gold each register within distinct numerical ranges. The system requires centered, pinpointed targets for maximum precision, rewarding your deliberate coil control with accurate readings. The large digital ID screen enhances readability during extended detecting sessions, allowing you to quickly interpret target information without straining your eyes. The digital readout matches the cursor position on the graphical scale, providing dual visual confirmation of target conductivity.
While underwater detection isn’t this model’s forte, the scale excels in terrestrial applications where conductivity analysis separates treasure from trash. Your Target ID cursor position directly corresponds with the displayed digital value, providing consistent, repeatable target classification.
Visual Depth Indicator
Complementing the numeric Target ID system, the Ace 400’s visual depth indicator delivers real-time estimation of coin-sized target burial depth through a graduated bar display on the LCD screen.
You’ll find this depth accuracy particularly useful when working heavily hunted sites where efficient recovery matters.
The visual indicators integrate seamlessly with your detection workflow:
- Bar display activates continuously during target detection
- Depth readout updates in real-time during pinpoint mode
- Display pairs with Target ID cursor for complete target assessment
- Graduated scale provides quick-reference estimation
Depth accuracy excels for coin-sized objects but requires visual verification for larger targets.
The system works in tandem with your sensitivity settings—higher levels extend detection depth for small targets, while lower settings stabilize performance in mineralized ground conditions.
The Target ID operates on a 0-99 digital scale, providing precise numerical values that help you distinguish between different metal types and targets before digging.
The ACE 400’s 12 segment notch discrimination allows you to filter out specific target ranges on the display, customizing which signals you want to accept or reject during your hunt.
Battery Status Monitor
Monitoring your power supply during extended detecting sessions becomes straightforward with the Ace 400’s four-bar battery status indicator. This continuous display sits prominently on the main LCD alongside your Target ID readings, requiring no activation to track battery longevity in real-time.
You’ll get 20-40 hours of operation from four pre-installed AA batteries, with the included set averaging 27 hours of field time.
The system maintains full performance until just one bar remains, giving you clear power management control before output degrades.
When that final segment appears, you’ll hear a fast double beep signaling immediate replacement needs.
NiMH rechargeables work seamlessly, though expect shorter intervals between charges.
Stick with 1.5V lithium cells—3.7V variants will damage your detector’s circuitry permanently.
Physical Design and Construction Quality
The Ace 400’s 2.9 lb (1.32 kg) total weight enables extended detection sessions without fatigue, making it one of the lighter units in its class.
You’ll find the adjustable stem ranges from 42″ to 51″ (some specifications note 40″ to 53″), accommodating users of varying heights while maintaining stability through camlock mechanisms.
The collapsible design facilitates transport and storage, letting you quickly break down the detector for vehicle transport or gear bags.
Weight and Portability Benefits
- Compact collapsed design for effortless transport
- Included padded carrying case for protection
- Stowable headphones that secure quickly
- Durable construction withstanding rocky terrain
You’ll appreciate how this lightweight build grants you freedom to explore remote locations without equipment burden. The camlocks provide stability while maintaining the detector’s portable nature.
The waterproof coil means you won’t hesitate at stream crossings or beach hunts.
Adjustable Length and Stability
Beyond portability considerations, your detecting success depends heavily on proper fit and structural integrity during extended hunts. The ACE 400’s adjustable stem spans 42″ to 51″, delivering nine inches of customization to match your exact height requirements. This collapsible design accommodates multiple operators without compromise.
The integrated camlock mechanism transforms stability features from basic functionality into field-proven performance. Quick-release camlocks secure each stem section firmly, eliminating wobble during prolonged sweeps across varied terrain. You’ll maintain detector rigidity throughout hours of operation.
When paired with the 8.5″ x 11″ DD PROformance coil, this adjustable stem configuration creates a balanced 2.9-lb platform that responds precisely to your movements. The ergonomic button placement on the control box ensures you maintain natural positioning while adjusting sensitivity, pinpointer, and optimizing performance parameters.
Searchcoil Performance and Detection Capabilities
At the heart of the Ace 400’s detection system lies its 8.5″ x 11″ DD-configuration PROformance searchcoil, a waterproof component that delivers substantial ground coverage while maintaining precise target separation capabilities. You’ll appreciate its submersible waterproof performance, enabling unrestricted detection in streams, shallow water, and adverse conditions without compromising functionality.
The 10 kHz operating frequency targets low to medium conductivity items, particularly gold and lead. You’ll access four frequency shift positions (F1-F4) for coil calibration when interference occurs.
The system provides:
- Eight-level sensitivity adjustments for depth optimization
- Digital Target ID scaling from 0-99
- High-resolution iron discrimination with four dedicated segments
- Depth indication displaying 2-inch increments to 8 inches
This narrow detection field configuration surpasses traditional concentric coils in separating adjacent targets, maximizing your recovery rate in trashy environments.
Power Supply and Battery Management
Operating on four AA batteries, the Ace 400 eliminates proprietary power systems and delivers approximately 27 hours of continuous detection time. You’ll appreciate the freedom to use standard or rechargeable cells—no manufacturer lock-in restricts your choices.
With four AA batteries providing 27 hours of runtime, the Ace 400 frees you from proprietary power systems and manufacturer restrictions.
Battery longevity supports multi-day expeditions without constant replacements, keeping you in the field longer.
Power management excels through intelligent design. The detector retains your last-used mode and automatically adjusts ground balance at startup, eliminating repetitive configuration.
You’ll maximize efficiency by adjusting sensitivity appropriately and switching between four frequency channels to combat EMI without draining power.
The 2.9-pound total weight, combined with extended runtime, enables prolonged searching sessions.
When interference threatens performance, frequency shifting maintains stability without forcing sensitivity reductions that compromise detection depth or consume additional battery resources.
Included Accessories and Package Contents
When unboxing the Ace 400, you’ll find everything required for immediate field deployment. The standard package delivers professional-grade components without compromise.
Core accessories overview includes:
- ClearSound Easy Stow headphones with integrated volume control
- ACE Environmental Coverup protecting your control housing
- 8.5″ x 11″ searchcoil cover preventing wear and debris damage
- Complete hardware kit with camlocks and mounting components
Your detector’s length adjusts from 42″ to 51″, accommodating various operator heights.
The waterproof searchcoil connects via bolt-and-washer assembly, while camlocks ensure stem stability during operation.
Four AA batteries come pre-installed with condition monitoring.
Select bundles expand capabilities with Discovery Pack configurations and carry bags.
Warranty details specify three-year limited parts and labor coverage, ensuring long-term performance reliability.
This detailed package eliminates additional purchases, letting you pursue targets immediately.
Real-World Performance Testing Results
Having the right equipment means nothing without proven field capabilities. The Ace 400 delivers quarters at 11 inches, dimes at 9.5 inches, and nickels at 11.5 inches—respectable depths that translate to real finds.
You’ll appreciate the discrimination accuracy with numerical IDs from 0-99, eliminating junk targets through distinct iron audio tones. The fixed ground balancing handles typical soil conditions adequately, though you can’t manually adjust for challenging mineralization.
Battery performance exceeds expectations at 27 hours during field testing, letting you hunt without constant power concerns. Maximum sensitivity release peak depth, but some environments force reduced settings due to electromagnetic interference.
The 10 kHz frequency strikes practical balance between conductivity range and penetration, giving you genuine versatility across target types.
Frequently Asked Questions
Can the Garrett Ace 400 Be Used for Saltwater Beach Detecting?
You’ll find it works for saltwater beaches, though you’ll need proper balancing to combat saltwater corrosion and falsing. Reduce beach sensitivity near waves, keep the coil moving, and you’ll detect targets six inches deep in wet sand.
Is the Garrett Ace 400 Waterproof or Submersible?
The ACE 400’s searchcoil offers waterproof features for metal detecting in shallow water up to 3 feet, but you’ll need to keep the control housing dry—it’s not submersible, limiting your detecting freedom in deeper conditions.
What Is the Warranty Process if My Detector Malfunctions?
You’ll register your warranty claims at garrett.com, then return your detector to an authorized repair station for evaluation. Manufacturer support inspects equipment against performance specs and handles repairs or replacements within the 36-month coverage period.
Can I Upgrade to a Different Searchcoil for the Ace 400?
Yes, you’ve got excellent searchcoil compatibility and upgrade options. You can swap Garrett’s OEM coils (Super Sniper, Viper, Reaper, PROformance) or third-party options like the Detech Butterfly—all direct-fit without settings changes, expanding your detection capabilities.
How Does the Ace 400 Compare to Competing Detectors in Its Price Range?
The ACE 400’s 10 kHz frequency outperforms 6.5-8 kHz rivals for coin shooting and landscape exploration. You’ll get superior discrimination, adjustable frequency shifting, and reliable 10-11 inch depth—giving you versatility most $300-400 detectors can’t match.
References
- https://www.metaldetector.com/products/garrett-ace-400-metal-detector
- https://lmsmetaldetecting.store/products/garrett-ace-400-metal-detector-lms-metal-detecting
- https://www.youtube.com/watch?v=J7gMKMCrhLE&vl=en
- https://detectorwarehouse.com/products/garrett-ace-400-discovery-pack
- https://garrett.com/sport/ace/ace-400?page=10
- https://www.metaldetector.com/pages/learnfield-tests-and-reviews-by-brandgarrettgarrett-ace-metal-detectors-series-comparison
- https://www.myersdepot.com/products/garrett-ace-400/
- https://garrett.com/garrett-ace-400-w-clearsound-easy-stow-headphones/
- https://bigboyshobbies.net/products/garrett-ace-400-metal-detector
- https://www.youtube.com/watch?v=RiTHFoC3SXk
