Garrett Ace 400i Review

Metal detectors are fantastic devices to purchase, and make for a brilliant hobby. If metal detecting is something you are interested in, then you will want to purchase a detector that is good quality. 

When you are just starting your metal detecting journey, it can be difficult to know which option to choose. However, there is one company in particular that is a great option to consider. That company is called Garret. They have a variety of different detectors that vary in price.

In this article, we will be focusing on one detector in particular, the Garrett Ace 400i. We will be providing you with an in depth review of it, to find out whether or not it is worth purchasing. We will be focusing on specifics such as the price, frequency, and modes. 

Garrett Ace 400i Company Background

Before we jump into our review of the Garrett Ace 400i, let’s take a closer look at the company and its background. The Garrett company is family owned, and was set up by Charles Garrett, and his wife Eleanor Garrett in 1964. They are an American based company, and are prevalent in the metal detector industry.

When it comes to their customers, they are very important to Garrett, and they do everything to ensure that they are providing good quality products in addition to great customer service. 

On the whole, they are a great company to consider. Their products are also reasonably priced, and held in a high esteem. 

Garrett Ace 400i Review

Garrett ACE 400i Metal Detector

When it comes to the best metal detectors, the Garrett Ace 400i is one of the most popular detectors to consider. It is one that had a lot of hype surrounding it when it was first released. Even though it has been released for some time now, it still remains a firm favourite for many. 

In this article, we will be splitting our review of the Garrett Ace 400i in specification sections, to help you find the information you need with ease.


To begin with, let’s take a look at the price of the Garrett Ace 400i metal detector. This is not the cheapest metal detector that can be purchased, and it is an option to consider if you are looking to take metal detecting more seriously. 

Even so, in the grand scheme of things, the metal detector is reasonably priced. When compared to ones of a similar specification, it is not overly expensive, and it is a great option to consider.

Garrett ACE 400i Metal Detector
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Garrett ACE 400i Metal Detector
  • The Package Width of the Product is 40.0...
  • Country of Origin : France
  • The Package Height of the Product is 15.0...
  • The Package Length of the Product is 55.0...

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Garrett Ace 400i Specifications

The overall specifications for the Garrett Ace 400i are good. This model is black and yellow in its colour and is easy to operate. 

When it comes to purchasing a metal detector, you will want to ensure that it is lightweight. After all, when you are using and holding it for longer periods, your arms will quickly tire. What is great about this model is that it is not too heavy on the whole, being 1.32 kilograms. 

When you take into consideration the size of the metal detector, you may be surprised to learn just how lightweight it is. Being lightweight it is comfortable to hold for longer periods, and it is easy to transport and carry too, which is useful. 

The overall size of the metal detector is 54 x 36,5 x 14 cm. This is fairly standard for a metal detector, and is the perfect size for adults to use with ease. It is not too large, or too small. What is great about the Garrett Ace 400i is that the length can be adjusted from 53” to 40” to allow people who are shorter to use the metal detector too.


When purchasing a metal detector, it is important that it features a warranty. The Garrett Ace 400i comes with a two-year limited warranty, which covers the parts and labour should anything go wrong with it. 


When you purchase the Garrett Ace 400i Metal Detector, it comes with the following items:

  • Garrett ClearSound Easy Stow Headphones with volume control
  • ACE Environmental Cover-Up
  • Searchcoil cover

These are a fantastic addition to be included with the metal detector. Given that they are included at no additional cost, you do not have to worry about purchasing these items separately. 

The headphones work well and allow you to block out outside noise, to focus specifically on the sound of the beeping from the metal detector. They are comfortable to wear and are a great quality too. 

The searchcoil cover helps to protect the coil in adverse weather conditions, and helps to prevent damage. In addition, the environmental cover up allows you to keep using the metal detector when the weather is bad, without the screen or electronics becoming damaged. 

Search Modes

What is great about this metal detector is that it has 5 different search modes, which include pinpoint. This is great because it gives you more of a chance at finding metal that is covered. 

You can change between the search modes with ease on the control panel. The five different modes are:

  • Jewellery — Which helps to find rings, necklaces and other types of items. This stops iron based metals from being detected
  • Relics — This mode makes it more likely to find lead, bronze and brass options. It also stops you from being notified about iron
  • Coins — This option specifically helps you to find different types of coins. But, as it does pick up aluminium, you may also come across rubbish such as cans. It does, however, prevent you from picking up iron or foil
  • Zero-discrimination — This mode allows you to detect any type of metal
  • Custom — This allows you to programme your own settings about what you want to accept or reject. 


In addition to the different search modes you can choose from, there are also a number of different buttons too. The discrimination button allows you to accept or reject rubbish, which is useful. 

The power button allows you to switch the detector off and on, and the sensitivity button allows the sensor settings to be changed. There are 8 different sensor settings to choose from in total. 

The pinpoint button is particularly useful as it allows you to focus in on a specific area, rather than a wider area. 

The frequency of the Garrett Ace 400i is 10 kHz, and this can be adjusted, which is great. The standard searchcoil is 8.5” x 11” DD PROformance. There are their audio tone ID levels to choose from, which is useful.

Ease of Use

This metal detector is particularly easy to use, and it has a fast recovery time, which is important. The way in which it can distinguish different metals is useful and means that you will not be wasting your time digging up pointless materials.

The overall sensitivity is fantastic, and means that you are less likely to miss out on certain types of metal. The controls are easy to figure out, and it is all self-explanatory. 

With the additional accessories, the metal detector can be used in wet weather conditions. Though, you will need to take care that the control panel does not get wet.

On the whole, this is a fantastic metal detector to work. The only downside is that it is not always perfect when differentiating between different types of metals. However, it is very rarely that a metal detector can do this completely. 

Battery Life

The battery life of a metal detector is important. After all, you do not want it to run out while you are using it. It requires 4 AA batteries, which are easy to get hold of and do last for a significant amount of time. 

The Garrett Ace 400i also features a battery condition indicator, which does warn you if the battery is running out.


  • Price — This metal detector is not too expensive to purchase on the whole
  • Settings —  There are a good number of settings to choose from depending on what you are using the metal detector for
  • Additional Accessories — The addition accessories that are included are fantastic and help to enhance your experience using the Garrett Ace 400i
  • Easy to Use — This metal detector is easy to use and is very good on the whole


  • Accuracy —  While this is a very accurate metal detector, on occasions, it can struggle to differentiate between different types of metals.


To conclude, this is a fantastic metal detector to consider. It is very accurate and has some fantastic features on the whole. It is not too expensive and allows you to customize your metal detecting. 

It is easy to use, and all of the different settings are self-explanatory. As the height can be adjusted, it can be used by all of the family. The additional accessories allow you to use the Garrett Ace 400i in adverse weather conditions too, which is great. 

Written by Danny Nash

I love metal detecting, history and sharing that with you. Read more of Danny's articles.


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