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The Garrett ACE 400 sits at the top of the ACE family with Iron Audio, a powerful 8.5" x 11" DD PROformance searchcoil, higher operating frequency, adjustable notch discrimination, electronic pinpointing, and volume-control headphones. It is a strong choice for detectorists who want an easy-to-use ACE detector with more target information and better iron control.
Iron Audio allows you to hear discriminated iron that is normally silenced, helping you avoid digging unwanted flat iron targets such as bottle caps or washers.
To use Iron Audio, some degree of Iron Discrimination must be set. With Iron Audio turned on, a bottle cap response can include iron grunts that help indicate a possible trash target.
The ACE 400 adds key performance upgrades including Iron Audio, an 8.5" x 11" DD coil, higher frequency, adjustable notch discrimination, and volume-control headphones.
Numeric identification scale from 0 to 99 helps identify a target metal’s conductivity.

Non-motion All-Metal Mode function helps precisely locate a detected target’s position.

Increased resolution gives more precise control over how much iron discrimination to apply.

Shows a target’s conductivity and the detector’s discrimination pattern at the same time.

The ACE 400 is ideal for users who want a proven Garrett detector with more target information, better iron control, and a larger DD searchcoil than entry-level ACE models.
It is lightweight at 2.9 lbs, easy to use, and equipped with practical features for coin, relic, and general treasure hunting.
Iron Audio, adjustable notch discrimination, and enhanced iron control help you make better dig decisions when good targets are close to unwanted trash.
The 8.5" x 11" DD PROformance coil gives strong ground coverage and target separation for many hunting sites.
| Product | Garrett ACE 400 Metal Detector |
|---|---|
| Included Searchcoil | 8.5" x 11" DD PROformance searchcoil |
| Included Headphones | Volume-control headphones |
| Iron Audio | Yes |
| Search Modes | 5 search modes |
| Target ID | Digital Target ID, 0 - 99 |
| Discrimination | Adjustable notch discrimination |
| Pinpoint | Yes, electronic pinpointing |
| Frequency Adjustment | Adjustable frequency to help with interference |
| Weight | 2.9 lbs / 1.32 kg |
| Warranty | 3-year factory warranty, limited parts and labor |
Ships within 48 hours · Estimated delivery Jul 16 - Jul 21
US$40
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