Garrett ACE 300 Review

Very Good
Metal Detector
  • Country USA
  • Released 2016
  • Warranty 2 years
  • Additional
  • Headphones included

Best for

  • Coins
  • Relics
  • Beginners

garrett ace 300 preview

If you are looking forward to trying the hobby of metal detecting, there is a product available here that is perfect for beginners. As a beginner, you will probably be looking for a reasonably priced, easy to use, but decent quality metal detector. Garrett Ace 300 metal detector meets all these requirements with ease, so read on to learn more about this great beginner-friendly machine. This Garrett ACE 300 metal detector reviews reveals all details about the machine which is the “middle brother” in the well-known ACE lineage by Garrett.

Rating Explanations
All Purpose
Key Features
Easy to Use
Reviewed by
Michael Moore
  • VDI Target ID is available
  • 5 Search modes
  • Pinpoint mode is included
  • additional compatible coils are available
  • budget-friendly
  • very convenient for beginners
  • sturdy and durable design
  • frequency shift is available
  • only 1 operating frequency
  • only the search coil is waterproof
  • software cannot be updated
  • Technology: VLF
  • Number of frequencies: 1
  • Frequencies: 6.5 kHz
  • Search Coil: 6.5"х9"
  • Search Coil Type: Mono
  • Waterproof: Coil only
  • Updatable Software: No
  • VDI (Target ID): Yes
  • Search Modes: 5
  • Search Mode Types: All Metal, Coins, Jewelry, Relics, Custom
  • Ground Balance: Fixed
  • Pinpoint Mode: Yes
  • Audio Tones: 3
  • Batteries: 4 AA batteries required
  • Length (min-max): 42"-51"
  • Weight:2.75 lb
  • Warranty: 2 years

Garrett ACE 300 Key Features

VLF Technology

Produces an electromagnetic field that applies a continuous sinusoidal wave to the ground.

Mono Coil

Regardless of the need for more thorough overlapping, such coils can spor deeper targets.


Useful mode to save the target from damage when digging it out; also does not allow the detectorist to lose a small target in dirt.

Waterproof Coil

Nice feature that increases the range of potential locations and environments for detecting

Notch Discrimination

This feature allows to filter off certain types of metal you don’t want to spot. You can move the cursor to the left and to the right, and activate / deactivate pixels you want.

Garrett ACE 300 Overview

garrett ace 300 overview

Garrett released ACE 300 in 2016, as a middle option between ACE 200 and ACE 400. The brand described ACE 300 as “A powerful performer at a bargain price”, which is totally true. ACE 300 is a combination of features and functions which are more advanced than in ACE 200, less complicated than in ACE 400, with the price range between the two. The main differences are No Iron Audio (ACE 400 has it), adjustable Notch Discrimination, Garrett ACE 300 frequency 8 kHz with frequency shift option (medium frequency within the lineage), and 7×10 inches concentric search coil (medium size). Garrett 300 ACE is powered by 4 AA batteries, has 2 years warranty, and is pretty lightweight. This new Garrett ACE 300 review will tell you more details.

Control Box

garrett ace 300 control box

Garrett ACE 300 is equipped with LCD display which makes it easier to manage the settings and analyze the signals. Besides the display, the Control panel includes Power On\Off button (also Factory Reset), Mode button, Sensitivity, PInpoint, Discrimination Accept/Reject buttons, and Frequency Adjust button. The screen has the following indicators: Battery level, Search mode, Target ID Legend, Digital Target ID, Target ID Cursor, Notch Discrimination pattern, and Depth indicators.

Search Modes

Preset modes are handy for fast and accurate tuning of the metal detector, depending on the location and targets wanted.

All Metal

In this mode, the detector spots every type of metal. If you want precision, use Notch Discrimination. On the other hand, All Metal can be used when the potential target does not give a clear signal.


This mode is designed for rings, necklaces, bracelets, and watches. it filters out iron and trash, and can make the search very profitable.


Created for US coins mostly, and coins similar in terms of characteristics and composition, this mode is accurate and precise. But keep in mind that medium size jewelry is likely to be missed in this mode.


The mode is designed for items made of metals with lower conductivity range - lead, brass, bronze - that are typical for relics.


This is a free slot for unique settings saved by the user to meet a specific location conditions.

Garrett ACE 300 Features

Garrett Treasure ACE 300 is the middle model within the ACE 200, 300, and 400 lineage, which means it is totally beginner-friendly, and yet it provides a little bit more than bare necessities needed for metal detecting. In fact, with it being a “switch on and go” machine, there are also some cool features that will definitely enhance the user experience, and make treasure hunting more productive. These features include:

Garrett ACE 300 Search Coil

The default search coil included into the basic ACE 300 kit is the 7×10 inches concentric submersible PROformance coil. This water protected coil is created for general-purpose metal detecting, and works well for different types of targets. While it is not something outstanding, any treasure hunter will be able to detect successfully with it, because it is versatile and multifunctional. On the other hand, there are many other compatible coils available for ACE 300; they are:

Garrett ACE 300 Settings

Garrett ACE 300 has eight levels of Sensitivity. It is recommended to increase the Sensitivity only when the detectorist expects very small, or very deep, targets. In other cases, the default level of sensitivity included into the Search Mode will show nice results. If the location is extremely trashy, highly mineralized, or the detectorist notices electromagnetic interference, it is recommended to use Frequency shift, or adjust the Discrimination. However, if these measures do not solve the problem, decreased level of Sensitivity might be the solution.

To discriminate more precisely, and decrease the risk of missing a good target being masked by response of a ferrous object, the detectorist should use Notch Discrimination. Due to this feature, it is possible to eliminate specific objects which correspond to certain pixels on the Discrimination scale. There are 12 pixels in ACE 300, and it is possible to switch on or off any combination of the pixels, to achieve the needed effect. You can manipulate the Notch Discrimination either by creating a notch at the Target ID Cursor, and silence a specific item in the future, or, you can move the Target Cursor and then eliminate the pixel directly under the Cursor.

Garrett ACE 300 Problems

One of the first problems that make many beginner detectorists sad is that only the search coil for Garrett ACE 300 is waterproof. While the metal detector is created more for beginner to medium-level-of-skill treasure hunters, which means that few of those treasure hunters are experienced enough to do some deeper underwater detecting, having the whole machine isolated from water is more beneficial. Besides staying up-to-date with time and allowing the detectorist to learn and enhance their skill with this same metal detector, without the need to purchase a fully waterproof one soon, a fully water protected metal detector is also more handy. ACE 300, on the other hand, can be rendered inoperable by heavy rain, accidental waves, or after being dropped to the water.

The other problem is that software cannot be updated online for ACE 300. When the ACE series was created, and ACE 300 was released in 2016, there was no such option as updatable software for these machines, because they were made for newbies, and the features included were rather simple. However, today, the technologies in ACE 300 are not very outdated yet, but they cannot be updated even a little bit by online updates. And at the time of writing, when updatable software is almost a must-have, this becomes a disadvantage.

Tips & Tricks for Garrett ACE 300 Users

garrett ace 300 user

It seems that the Notch Discrimination is one of the most advanced features in ACE 300, and at the same time it can be one of the most complicated features to master for a beginner detectorist. This is why we offer two more tips on Notch Discrimination.

When you deal with masking of the good targets by ferrous objects, you can use minimum Discrimination, just on the edge of rejecting. This way, you will be able to detect both good and bad targets, but you will distinguish between the two.

Also, Notch Discrimination can be used for spotting very specific objects, for example, lost jewelry. If you have a sample of metal/material, you can scan the sample in zero Discrimination mode and then find the exact pixel in the Notch Discrimination that matches the sample response. Switch off all other pixels, and you will be able to spot the item of the same chemical composition as your sample, by detecting only this specific pixel.

Garrett ACE 300 Accessories

Generally, ACE 300 is a comparatively minimalistic and self-sufficient tool. There are few other accessories you can purchase additionally. In addition to search coils already listed above, other compatible accessories include:

Garrett ACE 300 Kit

garrett ace 300 kit

Most retailers offer the following package by the manufacturer:

However, you may want to explore local retailers or international platforms, because there is a high chance of finding additional bundles with some accessories already added.

Garrett ACE 300 Manual

If you would like to find out all the details and nuances about Garrett ACE 300, please check out the user’s Garrett Treasure ACE 300 manual before you purchase the metal detector. The more you are aware of it in theory, the easier it will be to master the settings in the field.

Download Garrett ACE 300 User’s Manual

Garrett ACE 300 Official Video


How to manage intermittent signals?

Deeply buried targets usually give intermittent signals. Other items that cause such signals may be shallow targets, but located at a weird angle. If you stumble across a patch that gives intermittent signals, try scanning it from different angles, to identify the position and depth. You can use Pinpoint mode for more precise identification, or even change the search coil to a smaller one, if possible.

Is the Garrett ACE 300 waterproof?

No, it is not completely waterproof. Only the coil is waterproof, meaning you can submerge it, but the Control box is not protected and can be rendered inoperable if leakage occurs.

Does the Garrett ACE 300 work good on the beach?

ACE 300 shows nice results on the beach, even on the wet sand. However, let’s be honest, as a beginner level metal detector, it does not cope very well with saltwater. So, treasure hunting around freshwater bodies may show slightly better results than on the seashore, just a thing to keep in mind.


If you are new to the metal detecting hobby, Garrett ACE 300 may be a perfect choice for you. It is comparatively simple and with comprehensive settings, but not too simple to be primitive and limited in capacities. ACE 300 provides enough variability and flexibility to show nice results on different terrains and with different targets. It is one of the best metal detectors to enter the hobby with.


Garrett ACE 300 Best middle-price metal detector

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Michael Moore

Hi detectorists! I’m Michael Moore, founder of this website, and a dedicated treasure hunter since 2013. If you want to be posted about the most recent news and updates in metal detecting, releases, and trends, subscribe!

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