Powerful and affordable, Garrett Ace 400 seems to be the perfect professional metal detector for beginners to use. Anyone who wants to hunt for treasure such as gold, relics, jewelry and coins may benefit from this detector.

The Features:

An upgraded version of the ACE 350, ACE 400 has most of the advanced features of Garrett Ace 400i such as digital target ID, adjustable frequency, cam locks, and iron audio that make it worth the investment.

Digital Target ID

The 0 to 99 scale digital target ID makes it easy for the user to view target information on the display screen. The numbers may change based on depth, ground conditions and nearby targets if any. Nevertheless, this is how some of your coin targets might hit on this scale:

  • Between 87 and 90 for a U.S Clad Quarter
  • Between 83 and 85 for a U.S Clad Dime
  • Between 42 and 45 for a U.S Clad Nickel
  • Between 77 and 80 for a U.S Clad Penny

Iron Audio

The most impressive feature of this detector is its Iron Audio. Whenever the detector identifies iron in a target this feature helps you hear a low, grunting tone. This way you can double check your target before digging it. However, iron will not be discriminated in the Zero-Disc mode.

Adjustable Frequency

Broadcasting at a frequency as high as 10 KHZ, the Garrett 400 lets you adjust the frequency as per your discrimination needs. This way you can identify just what you want, without getting distracted by the interferences caused by power lines, WIFI signals and other metal detectors.

Cam Locks

Camlocks provide a lot of strength and stability to this metal detector. This simple, plastic locking mechanism can tighten up the joints of the three pieces of ACE 400 and keep them from wobbling, while you move or swing. So your detector, although made from three different pieces, feels like a single, solid piece.

Search Modes

There are five discrimination modes in Garrett 400 that include Zero discrimination, Coins, Jewelry, Relics, and Custom. The notch feature that comes with the custom mode helps you switch over to the mode that you need to use. For instance, if you are looking for silver coins, you can use the coin mode and then notch out the segments for metals like copper, zinc, and nickel.

Apart from the above, the ACE 400 also comes with other additional features such as:

  • Electronic pinpointing
  • Sensitivity adjustment
  • Depth indication
  • Three different tones
  • 8.5 x 11” DD coil

Pros and Cons of Ace 400:


  • Although a high-end professional metal detector, the Garrett 400 can be used easily even by beginners
  • Powerful detector with all the advanced features you can ask for, it is still very much affordable and offers great value for money.
  • The large 8.5 x 11” DD Coil makes it easy to get maximum depth and cover more ground within less time.
  • Precise detection of targets makes it easy to distinguish treasure from trash
  • It comes with a 2 year warranty


  • The device include ground balance adjustment
  • Younger kids might find it too heavy to use
  • It can be used on dry sand but not on wet sand in salt water beaches since it is a single frequency VLF detector.
  • The headphones that you get along with the detector may not be of great quality. You may want to think of upgrading to a better pair sometime in the future.
  • Although the coils and poles of ACE 400 are waterproof and submersible, the control box is not. Therefore the detector is not fully submersible.

Garrett is a quality brand that offers excellent customer service. Any product introduced by them offers full value for money and the Garrett 400 is no exception.

Published by Justin Jersey