Shopping Cart
Garrett ACE 400i Metal Detector

Garrett ACE 400i Metal Detector

Regular price £337.00

Brand: Garrett 

Package Dimensions: 21.3 x 14.4 x 5.9 inches

The Garrett ACE 400 metal detector is an excellent all-rounder. Whether you’re an amateur just getting started or you’re looking for a professional-grade metal detector, this could be an ideal choice for you.

Packed with features, this Garrett model is based on the hugely successful and popular Euro ACE detector, representing a step up in class that is guaranteed to impress searchers of all abilities and levels of experience.

The Garrett ACE 400 metal detector traverses the border between entry-level products and midline detectors, and it’s an excellent option for any buyer that is looking for a high-quality metal detector from a reputable brand at an affordable price.

At a glance: an introduction to the Garrett ACE 400

If you’re on the hunt for a piece of treasure in the form of a new metal detector, it won’t take you long to stumble across the Garrett name. This is a leading brand, and it offers a comprehensive range of products to cater for all budgets.

The ACE collection is synonymous with quality and performance, and the 400i model builds on the success of other products, most notably, the EURO ACE, a best-seller all over the world.

The 400 is a class above the rest of the ACE range, which gives you an idea of the level of quality and functionality you can expect.

Perhaps the most impressive aspect of this new and improved version of the ACE metal detector is the array of features on offer. This model takes all the essential elements of its predecessors and adds a host of additional benefits for improved user experience.

There’s a veritable feast of features to enjoy when examining the Garrett ACE 400 in closer detail.

The ACE 400 is sleek and compact, and at less than 1.5kg, it’s also relatively lightweight. The distinctive black and yellow colourway, which is a feature of the ACE range, is likely to appeal to many buyers, and the unit is portable and easy to transport.

Sensitivity is key when scouring the ground for professional or leisure purposes. The ACE 400 shines in this category, offering an operating frequency of 10kHz compared to 8kHz for the ACE 300. This increased sensitivity is ideally suited to identifying small objects, including coins and relics. When you use the detector in a group, you can also benefit from frequency adjustment.

The ACE 400 is powered by four AA batteries, which provide an average of 25 hours of searching time. There’s a handy battery indicator, which will tell you how much time you have left and when you need to replace the batteries.

The Garrett ACE 400 boasts an advanced audio system, featuring three tones and a pulse-width-moderation feature, which contributes to sharper, clearer sounds. The tiered tone system correlates with the conductivity of the material detected, with high conductivity producing a bell tone and low conductivity triggering a medium-low pitch sound.

One of the standout features of this model is the Iron Audio function. This has two main benefits. Firstly, you can filter out phantom sounds, and secondly, you can discover targets that are masked by iron.

The manufacturers at Garrett have clearly read reviews of the ACE 350 when creating the ACE 400. One of the main complaints aimed at the 350 model was the absence of digital target ID. The 400 offers a step up from the 350 in this particular area, providing digital target ID using a scale of 0-99 that appears in bold print in the centre of your screen. The higher numbers in the index indicate objects with high conductivity, for example, coins.

The Garrett ACE 400 offers customisable search modes, including 5 pre-set search settings. There are 12 notches in total, which enable you to adapt your detector to suit the individual project or location. The pre-set modes include:

Zero-disc, Jewelry, Relics, Coins, Custom (if you choose this setting, you can then decide on your own discrimination modes, enabling you to pinpoint the items you’re looking for) and Weatherproofing (we all know that metal detecting doesn’t always involve working under clear, blue skies. The good news is that the ACE 400 is designed to cater for all conditions, with a waterproof searchcoil and a rain cover.)



  • Excellent value for money
  • Custom settings
  • Advanced audio features
  • Heightened sensitivity
  • Lightweight and portable
  • Digital target ID
  • Iron discrimination features
  • Easy to use


  • The yellow and black design might not appeal to everyone
  • The cost may be slightly too high for beginners
  • Not suitable for saltwater


The Garrett ACE 400 is part of a well-known and highly-respected collection of metal detectors, and as the premium product in the range, it doesn’t disappoint.

Offering a stunning array of features at a price that is relatively low compared to rival detectors, this is an all-rounder that definitely delivers.