Hello and welcome to our Garrett Ace 400 Review where we get close to the exciting adventure of discovery and that accuracy which characterizes this amazing device for finding metals. This is not just a hobby; it’s like a gateway to the past or even feeling its touch. In your mind, you have imagined yourself as a seasoned treasure hunter with Ace 400 by Garrett in your hand or you are just a beginner, who wants to start their treasure hunting experience – believe it, this device will be your best friend forever on that journey. In this review of the Garrett Ace 400, we shall contrast it with models from other producers and previous versions of Ace as well as suggest some tips on how one can increase their treasure haul. Lets start!
Table of Contents
Garrett Metal Detectors was founded by Charles and Eleanor Garrett in 1964 in Garland, Texas. From their garage, they built a global business renowned for quality and innovation in metal detecting technology. Today, Garrett continues to honor their legacy by producing reliable and high-performance metal detectors used worldwide. Their commitment to excellence and detail has made Garrett a trusted name among hobbyists and professionals alike. For more details, visit Garrett’s story.
Design and Build Quality

First impression is important, isn’t it? This Garrett Ace 400 doesn’t fail to impress. It’s practically designed as a tank and yet it weighs nothing at all. Lovely ergonomics are offered here, with the padded grip that does not make hours of metal detection a trouble! One is not likely to have an aching arm after a day in field.
If you need something rugged enough to endure abuse even when being dragged through muddy fields or crossing rocky grounds; then this one fits the bill.
This display is clear and intuitive and has different readouts and settings which are easy to comprehend. Also, I must mention its adjustable stem that can cater for varied heights of detectorists. No more crouching or back pain!
Detection Technology
Here’s where the Garrett Ace 400 truly shines. Its 10 kHz frequency creates the ideal mix of sensitivity and depth. This machine can detect coins, relics, and jewelry with astonishing accuracy. The ACE 400’s iron audio feature is a game-changer, allowing you to hear the iron content in your targets and avoid digging up worthless junk. The way I see it, treasure hunting has a certain sixth sense.
Compared with Ace 300 it is like comparing night and day. The 400 is able to pick up faint signals that the 300 could not catch, thereby making history come alive.

Ease of Use
You will find it easy to set up the Garrett Ace 400. All you have to do is fit the parts together, add batteries and you are ready for action. Simple, easily understandable menus and icons make up the user interface. Within no time beginners will be comfortable using this device.
The learning curve is minimal. Sure, there are some nuances to master, but the basics are intuitive. The preset modes (Zero-Disc, Jewelry, Custom, Relics, Coins) are incredibly handy, especially when you’re just starting out. Switch modes, and the detector adjusts its settings to optimize for different types of finds.
Performance on Different Terrains
The Garrett Ace 400 performs extremely well on various grounds. You can use it in different types of soils such as sandy beaches, grassy fields and rocky hillsides without experiencing any problem with this detector. In the clayey places where my Ace 300 labored, the Ace 400 shone bright. It separates many metals with amazing accuracy, separating signals from noises and focusing solely on potential finds.
One of my favorite spots is a trashy area with a mix of soil and clay. The Ace 400’s ability to separate signals from multiple targets close together saved me countless hours. Instead of digging aimlessly, I could zero in on promising finds.

Discrimination and Notch Capabilities
Metal detecting requires a crucial discrimination, which the Ace 400 masters in. It has a notch that is adjustable which allows you to rule out unwanted metallic objects thus enabling one to concentrate on the desirable ones. The iron audio function helps users know the quantity of iron there is in a particular item. Nevertheless, be careful when targets are in close proximity as often times at such instances the iron audio can fool people. Slow your pace, utilize the pinpoint feature and most likely you’ll get an improved picture of what lies underneath.
Audio and Visual Indicators
The audio indicators on the Garrett Ace 400 are distinct and easy to hear. Different tones for different types of metals help you decide whether to dig or move on. The visual display complements this by showing you the probable type of metal and its depth. This dual feedback system makes detecting more efficient and enjoyable.
Battery Life and Power Options
Battery life is a non-issue with the Ace 400. It can be used continuously for up to 25 hours while using four AA batteries. That should be more than sufficient for a full day of detecting, with some more for the upcoming outing. Always carry spare batteries, though, because nothing’s worse than running out of power just as you hit a promising spot.
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Additional Features
The Ace 400 comes loaded with features that enhance your detecting experience. The pinpoint mode is incredibly accurate, helping you locate targets with precision. Shallow water detecting is a possibility because standard coil is waterproof. There are also a number of other equipment that can be used in the hobby.
Even if you find yourself knee-deep in a creek, the Ace 400 wouldn’t miss a beat. Waterproof coil? Yes. Precise pinpointing? Definitely so.
Comparison with Other Models
Here’s a detailed comparison table for the Garrett Ace 400, Garrett AT Pro, and Minelab X-Terra 705:
Feature | Garrett Ace 400 | Garrett AT Pro | Minelab X-Terra 705 |
---|---|---|---|
Frequency | 10 kHz | 15 kHz | 7.5 kHz, 18.75 kHz (switchable) |
Weight | 2.9 lbs (1.32 kg) | 3.03 lbs (1.37 kg) | 2.9 lbs (1.3 kg) |
Waterproof | Coil only (control box not waterproof) | Fully submersible up to 10 feet (3 meters) | Coil only (control box not waterproof) |
Iron Audio | Yes | Yes | No |
Pinpoint Mode | Yes | Yes | Yes |
Display | Digital LCD | Digital LCD | Digital LCD |
Target ID | Yes (0-99 scale) | Yes (0-99 scale) | Yes (0-99 scale) |
Search Modes | 5 (Zero-Disc, Jewelry, Custom, Relics, Coins) | 6 (Custom, Coins, Zero, Jewelry, Relics, Pro) | 4 (Coin & Treasure, Relic, Prospecting, All-Metal) |
Ground Balance | Preset | Manual & Automatic | Automatic & Manual |
Audio Tones | 3 | 3 Pro Audio Modes | Multiple |
Operating Temperature | -4°F to 122°F (-20°C to 50°C) | -4°F to 133°F (-20°C to 56°C) | 14°F to 122°F (-10°C to 50°C) |
Batteries | 4 AA | 4 AA | 4 AA |
Battery Life | Up to 25 hours | Up to 30 hours | Up to 20-25 hours |
Price Range | $300 – $400 Check current price | $600 – $700 Check current price | $500 – $600 Check current price |
Summary
- Garrett Ace 400: A great all-around detector with a user-friendly interface, iron audio, and good discrimination capabilities. Suitable for novices and experienced users seeking a dependable and reasonably priced solution.
- Garrett AT Pro: Offers advanced features like manual ground balance, full submersion capability, and higher frequency for better sensitivity. It’s perfect for serious hobbyists who want more control and versatility, especially for water hunting.
- Minelab X-Terra 705: Known for its switchable frequencies and automatic ground balance, making it a versatile choice for various detecting conditions. It is appropriate for anyone who would want a little more freedom in their prospecting and detection experiences.
Every detector has its advantages, and the one you choose will rely on your budget and particular requirements.
Pros and Cons
There are pros and cons to every metal detector. Let the Ace 400 run through it:
Pros:
- Great discrimination and depth detection
- Newbies-friendly and easy to use
- Heavy and rugged build
- It has an audio and visual indication in it
- Long battery life
Cons:
- Iron audio can be tricky with close targets
- Not fully waterproof (only the coil is)
- Some users may find the pinpoint mode takes practice
- Close targets with iron audio can be a bit of pain
- Coil is the only part of visua fully waterproof
- Some user suggest that the pinpoint mode is difficult to master
Tips for Optimal Use of Garrett ACE 400
To get the most out of your Garrett Ace 400, keep these tips in mind:
- Go Slow: Take your time sweeping the coil. This ensures you don’t miss any signals.
- Use Discrimination Wisely: Adjust the settings based on your target area to filter out unwanted metals.
- Master the Pinpoint Mode: Practice makes perfect. Spend time learning how to use this feature effectively.
- Check Battery Life: Always start with fresh batteries and carry spares.
- Vary Your Locations: Different areas yield different treasures. Explore beaches, parks, and old homesteads.
Here is an instructional video from the manufacturer on: Detector Assembly, Powering On/Off, Factory Reset, Target Information, Audio Features, and Iron Audio.
Conclusion
When it comes to metal detecting, nothing beats Garrett Ace 400. Its cutting-edge technology, affordability, and simplicity of use make it exceptional. This detector is reliable whether you’re looking for jewelry, coins, or artifacts. Its superior discrimination capabilities, accurate pinpointing and durable construction make it a valuable acquisition for any detectorist. Consequently, take your ace 400 and go to the place that you like most in order to find out sparkling treasures from the time immemorial. I wish you happy hunting!
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Frequently Asked Questions (FAQs)
Q: Is the Garrett Ace 400 suitable for beginners?
Absolutely. For those who are new to metal detecting, its user-friendly design and intuitive functions make it an excellent option.
Q: Is the Garrett Ace 400 a good detector?
Yes, the Garrett Ace 400 is a highly regarded metal detector, praised for its excellent detection capabilities, user-friendly interface, and advanced features like iron audio and pinpoint mode. It’s perfect for both novices and experienced detectorists.
Q: How deep will a Garrett Ace 400 go?
The Ace 400 can find targets up to about 8 inches deep when the conditions are very good. This depth, though, may differ according to the composition of soil and what is being aimed at.
Q: Is the Garrett Ace 400 better than the 300?
Yes, I am talking about the Ace 400 detector with some cool upgrades such as a higher frequency for more sensitive metal identification and iron audio to make it easier that discrimination process — this machine also has pretty good depth detection.
Q: Which Garrett is best?
The best Garrett detector will depend mostly on what you want. The Garrett Ace 400 — Best Metal Detector For Novices Or More Experienced Hunters. The Garrett AT PRO is also available for the more experienced detectorists with enhanced features and all-terrain versatility, including inclusive waterproofing.
Q: What is the best metal detector in the world?
Since the best metal detector varies depending on personal needs and preferences, there is no definitive answer. However, because of their cutting-edge features and dependability, top competitors frequently include the Garrett AT Pro, Minelab Equinox 800, and XP Deus.
Q: Does the Garrett Ace 400 have volume control?
No, the Garrett Ace 400 does not have a built-in volume control. Users typically adjust the volume using their headphones or external volume control devices.
Q: Can I use the Ace 400 in water?
The control box is not waterproof, but the coil is. Shallow water detecting is fine, but avoid submerging the entire unit.
Q: Can you ground balance Garrett Ace 400?
No, the Garrett Ace 400 has a preset ground balance. While this simplifies use for beginners, it may limit performance in highly mineralized soils compared to detectors with manual ground balancing.
Q: How does the iron audio feature work?
Iron audio lets you hear the iron content in a target, helping you avoid junk. However, be cautious with closely spaced targets, as the feature might sometimes pick up adjacent iron signals.
Q: What’s the battery life like?
The Ace 400 can run up to 25 hours on four AA batteries, so it’s good for extended detecting sessions. Always carry spare batteries to ensure uninterrupted detecting time.
Garrett ACE 400 Review by Users
Here are some testimonials by the users purchased from Amazon:
Testimonial 1:
“I recently upgraded to the Garrett Ace 400 and couldn’t be happier. The iron audio function has been a game changer, for me when I’m out metal detecting in my park helping me steer clear of numerous bottle caps and nails. The pinpoint mode is incredibly precise allowing me to dig with accuracy and efficiency. In a few trips I’ve come across coins, a couple of rings and even an old pocket watch! It’s lightweight and easy to use, perfect for both newbies and experienced detectorists.”
— John D.
Testimonial 2:
“The Garrett Ace 400 has exceeded my expectations. It’s a powerful detector that’s easy to operate. I took it to a beach and was amazed at how well it handled the wet sand. I find the discrimination settings to be exceptional; they make it easy for me to distinguish between finds and unwanted items. The depth indicator is also quite reliable. Overall this metal detector is an investment for anyone about this hobby.”
— Sarah K.
Testimonial 3:
“I’ve been using metal detectors for years, and the Garrett Ace 400 is one of the best I’ve tried. It’s user-friendly, with a clear display and intuitive controls. The depth detection is impressive, and I love the different search modes. The machine feels sturdy and well-made. I’ve already found some old coins and a silver bracelet in my backyard. Highly recommend it to anyone looking to up their detecting game.”
— Michael L.
Testimonial 4:
“As a beginner I was on the hunt for a metal detector that strikes the balance between user friendliness and advanced capabilities. The Garrett Ace 400 fits that criteria perfectly. It’s straightforward to set up and get started with detecting. The iron audio and notch discrimination features are particularly helpful in teaching me what signals to dig up and what to pass over. Exploring parks has been a blast uncovering items like coins, buttons and even a dainty silver ring. Definitely money well spent!”
— Emily S.
Testimonial 5:
“I can’t sing praises about the Garrett Ace 400! Upgrading from my model was definitely worth it as I immediately noticed the improvements. The iron audio feature is incredibly handy, in avoiding targets while the pinpoint function works like magic. I’ve been able to find items at greater depths than before, including a Civil War bullet and some old jewelry. The detector is also lightweight and comfortable to use for extended periods. Very happy with this purchase.”
— Daniel R.
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