Garrett ACE 400 Metal Detector with Iron Audio and 10 kHz VLF

The Garrett ACE 400 metal detector is the top model in the Garrett ACE Series metal detectors lineup, and the one we hand to detectorists who want Iron Audio, an adjustable 10 kHz frequency, and a 0 to 99 Digital Target ID without stepping up to AT-series money. Our team has run enough hours behind ACE machines to know where the 400 earns its slot. It belongs with hunters who want clean target separation in iron, predictable target ID, and an 8.5 inch by 11 inch DD coil ready for serious site work straight out of the box.

What's Included with the Garrett ACE 400

• Garrett ACE 400 control housing with three-piece adjustable stem
• Garrett 8.5 inch by 11 inch PROformance DD waterproof submersible search coil
• 8.5 inch by 11 inch coil cover
• Adjustable arm strap
• Search coil hardware kit with bolt, washers, and nut
• 4 AA batteries
• Garrett ACE 400 owner's manual
• Free Garrett buyer's guide (while supplies last)

Iron Audio Performance in Trashy Coin Sites and Farm Fields

Park Coin Shooting in Trashy Ground

The 400's strongest tool in tight urban parks is the combination of Iron Audio and the 0 to 99 Target ID. We run discrimination just above the iron range and turn Iron Audio on, so masked iron under a good signal still leaks a low growl into the audio. That cue keeps us from chasing crown caps that ID into the zinc penny zone. After a clean high tone hits, we drop to Pinpoint and finish recovery with our Garrett Pro-Pointer AT. This setup runs clean in city parks and school grounds where copper, zinc, and modern junk share the same column.

Old Home Sites and Farm Fields

Junk iron buries silver, period. The Garrett ACE 400 metal detector's adjustable iron discrimination plus Iron Audio was built for this scenario. We open discrimination wide, accept the iron grunts, and listen for the broken or partial high-tone signals tucked between them. The DD coil's narrow side-to-side detection field separates targets that a concentric coil would mush together. Slow your sweep, half the coil width per pass, and let the audio talk.

Dry Beach and Shallow Fresh Water

The control housing is not submersible, but the 8.5 inch by 11 inch DD coil and the lower stem are. We hunt the wet line with the coil dragging in damp sand. PWM audio gives crisper attack on shallow rings, which matters when a faint half-second signal is all you get on a tide-washed beach. Iron Audio stays on, so bottle caps near the water line do not waste plugs.

10 kHz Frequency and Adjustable Iron Discrimination

• Iron Audio reveals flattened iron like bottle caps and washers that read as good targets on most VLF machines, so we dig less trash in heavy coin and relic sites.
• The 10 kHz operating frequency lifts response on low and medium conductors such as small gold rings, lead, and thin silver, areas where the 6.5 kHz frequency on entry-level ACE machines goes quiet.
• The 8.5 inch by 11 inch DD coil ships standard, giving better depth and stable ground handling over mineralized soil than the concentric coils on lower ACE models.
• Notch Discrimination plus adjustable iron discrimination shaves the trash band out of the audio while keeping the conductive zone wide open for coins, rings, and relics.
• A Digital Target ID scale of 0 to 99 is granular enough to track a target across multiple sweeps and call it before digging.

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Specifications

• Operating Frequency: 10 kHz, adjustable
• Coil: 8.5" x 11" DD PROformance waterproof submersible
• Digital Target ID: 0 to 99 scale
• Iron Discrimination: Four-segment adjustable
• Search Modes: 5 modes plus Pinpoint
• Weight: 2.9 pounds with batteries
• Shaft Length: 42" to 51" adjustable
• Battery: 4 AA alkaline (included)
• Audio: PWM with 1/4 inch headphone jack
• Warranty: 3-year limited parts and labor
• Country of Manufacture: USA

Why Buy from Serious Detecting

We are an authorized Garrett dealer, and every ACE 400 ships with the full 3-year manufacturer warranty covering defects in materials and workmanship. Our team has run the ACE 400 in park turf, farm fields, and wet sand, so we can walk you through setup and settings before your first hunt. All orders ship free, and our 30-day return policy plus price-match guarantee mean you are covered if the machine does not fit your sites. We are detectorists first, and we stock what we use.