ACESingle frequency
ACE 300
8 kHzFrequency
Not publishedWaterproofing
2.8 lbWeight
View on Amazon ACE 300 (opens in a new tab)Affiliate link
Garrett · Single frequency detector
Garrett ACE 400
The ACE 400 runs the highest frequency of the four single-frequency ACE models in Garrett's table, 10 kHz, on an 8.5 x 11-inch DD coil. It weighs 2.9 lb, with headphones included.
10 kHzOne frequency
Not publishedWaterproofing
2.9 lbWeight, 1.32 kg
| Technology | Single frequency |
|---|---|
| Frequencies | 10 kHzGarrett lists the frequency as adjustable, to cut interference from other detectors. |
| Waterproofing | Not published |
| Weight | 2.9 lb (1.32 kg) |
| Coil | PROformance, 8.5 x 11-inch elliptical DD |
| Battery | 4 x AA (included) |
| Battery life | Not published |
| Search modes | 5 plus pinpoint search modes |
| Sensitivity | 8 levels |
| Target ID | 0 to 99 |
| Display | Not published |
| Headphones | Headphones included |
| Warranty | 3 years, limited parts and labor |
| Status | In the current range |
Source: Garrett, ACE 400 (ACE tech specs comparison) product page (opens in a new tab), read Oct. 16, 2026.
- Not publishedWaterproofing: Garrett's ACE pages and comparison table give no water rating for the ACE 400.
- Not publishedBattery life: Not published on the product page.
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How it differs from its neighbors
Garrett's comparison table sets the ACE 400 against three lower ACE models. The ACE 300 has the same five search modes plus pinpoint and an adjustable frequency, at 8 kHz. It uses a 7 x 10-inch concentric coil, with no Iron Audio and None included for headphones.
Lower down, the ACE 250 and ACE 200 share a smaller concentric coil and a lower frequency. The 200 has half the sensitivity levels, 4 levels against 8 levels on the 400. Weights run from 2.7 lb on the ACE 250 to 2.9 lb on the 400.
For multi-frequency, Garrett's ACE Apex lists a Multi-Frequency mode, plus single 5, 10, 15 or 20 kHz settings, with a built-in rechargeable lithium-ion battery. Garrett publishes no weight for it.
| Spec | BundleACE 400 | DetectorACE 300 |
|---|---|---|
| Frequencies | 10 kHz | 8 kHz |
| Waterproofing | Not published | Not published |
| Weight | 2.9 lb1.32 kg | 2.8 lb1.27 kg |
| Battery | 4 x AA (included) | 4 x AA (included) |
| Target ID | 0 to 99 | 0 to 99 |
| Display | Not published | LCD |
View on Amazon ACE 400 (opens in a new tab)Affiliate link | View on Amazon ACE 300 (opens in a new tab)Affiliate link |
Facts from Garrett's page for each model, read Oct. 16, 2026.
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Other Garrett models to compare
Three facts per model on one scale; open a card for its full spec sheet.
ACESingle frequency
ACE 250
6.5 kHzFrequency
Not publishedWaterproofing
2.7 lbWeight
View on Amazon ACE 250 (opens in a new tab)Affiliate link
ACEMulti-frequency
ACE Apex
5-20 kHzFrequency
CoilWaterproof part
Not publishedWeight
View on Amazon ACE Apex (opens in a new tab)Affiliate link
04
Questions about the ACE 400
Answered from Garrett's tech specs page, read Oct. 16, 2026.
Garrett gives no water rating for the ACE 400 on its product page or ACE comparison table. Some listing titles say "waterproof coil"; trust the maker's page and keep the control box dry.
Garrett says it lets you hear discriminated iron, normally silenced, such as bottle caps or washers. Of the four ACE models in Garrett's table, only the 400 has it; the ACE 200, 250 and 300 do not.
The coil is the clearest split: an 8.5 x 11-inch Double-D on the 400, a 7 x 10-inch concentric on the 300. On top, the 400 adds Iron Audio and headphones and runs 10 kHz against 8 kHz. The 300 saves a tenth of a pound.
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