Metal Detector – Garrett ACE 400i with 8.5" × 11" DD Coil

Garrett ACE 400i Metal Detector with 8.5" × 11" DD Proformance coil. Features Iron Audio, Digital Target ID (0–99), 10 kHz operating frequency & accessories

When field exploration demands outstanding detection depth, precise discrimination of unwanted metal objects, and advanced technology — whether for experienced detectorists or demanding metal detecting enthusiasts looking for the top model in the ACE series — the Garrett ACE 400i metal detector (PN: 1141560) delivers the ultimate solution.

Rightfully known as the “King of the ACE Series,” the Garrett ACE 400i incorporates advanced features typically found in professional models. It operates at a high frequency of 10 kHz, offering excellent sensitivity to low- and medium-conductivity targets, such as gold nuggets, gold jewelry, and lead. It comes equipped with the large, waterproof/submersible 22 x 28 cm (8.5" x 11") DD Proformance coil, which provides increased detection depth, faster ground coverage, and outstanding target separation in mineralized ground.

The ACE 400i’s major advantage is its Iron Audio technology, combined with triple-resolution iron discrimination (Iron Check with 6 iron segments), allowing the user to hear iron “junk targets,” such as bottle caps, before digging! Meanwhile, the Digital Target ID (0–99) provides precise information about metal conductivity, while the Adjustable Frequency helps eliminate interference from other detectors or power lines. It features 5 search modes, Electronic Pinpointing, 8 sensitivity/depth settings, special cam locks for stabilizing the shaft, and comes complete with a generous range of accessories.

Recommended Uses & Applications

• Gold & Jewelry Hunting: The high 10 kHz frequency provides excellent sensitivity to small gold objects, rings, and chains.
• Coin & Relic Hunting: The large 8.5" x 11" DD coil delivers maximum depth and fast ground coverage across fields, mountains, and forests.
• Searching in Areas with Iron Trash: Iron Audio and enhanced iron resolution help prevent unnecessary digging.

Key Features

• Iron Audio: Provides audible identification of discriminated iron targets, helping you avoid unwanted objects.
• Digital Target ID (0–99): Displays a precise numerical scale indicating metal conductivity.
• Waterproof/Submersible 8.5" x 11" (22 x 28 cm) DD Proformance Coil: Provides excellent detection depth and wide ground coverage.
• 10 kHz Operating Frequency & Adjustable Frequency: Enhanced sensitivity to gold and reduced electromagnetic interference.
• Electronic Pinpointing: All-Metal, non-motion pinpoint mode for accurately locating the digging spot.
• Complete Accessory Package: Includes headphones with volume control, a control-box cover, and a coil cover.

Technical Specifications

Operating & Care Instructions

1. Assembly & Stabilization: Assemble the shaft sections, adjust the detector to the appropriate height, and tighten the cam locks to eliminate unwanted movement during sweeping.
2. Using Iron Audio: Activate Iron Audio when you encounter a suspicious target. If you hear the characteristic low-pitched iron grunt, the target may be an unwanted iron object, such as a bottle cap.
3. Cleaning: The 8.5" x 11" DD coil is fully waterproof and can be submerged in water. The control box and display are NOT waterproof. Always use the supplied control-box cover in rainy or dusty conditions.

Frequently Asked Questions (FAQ)

What are the main differences between the Garrett ACE 400i and the smaller ACE models?
The ACE 400i features the highest operating frequency in the series (10 kHz), a large 8.5" x 11" submersible DD coil, Iron Audio, adjustable frequency to help reduce interference, and includes headphones with volume control, a control-box cover, and a coil cover.

Is the Garrett ACE 400i metal detector waterproof?
The 8.5" x 11" DD Proformance search coil is fully waterproof and submersible. The main control unit with the LCD display must not be submerged in water, but it can be protected from rain using the special cover included in the package.

How does Digital Target ID help?
It displays a number from 0 to 99 on the screen according to the conductivity of the metal. For example, lower numbers generally indicate iron, medium numbers may indicate gold or alloys, and higher numbers may indicate silver or copper. This helps you assess what may be buried in the ground before digging.

Which accessories are included in the package?
The Garrett ACE 400i package includes headphones with in-line volume control, a control-box cover, a coil cover, and 4 AA alkaline batteries.