I Tested the Garrett Ace 400 Metal Detector: My Honest Review and Why It’s a Top Choice for Treasure Hunting

AvatarByNora Whitcomb

I’ve always found that the right metal detector can turn an ordinary outing into an exciting search for hidden stories beneath the surface, and the Garrett Ace 400 Metal Detector is one of those tools that immediately stands out. Known for its balance of user-friendly design and impressive performance, it has become a popular choice for both newcomers and experienced treasure hunters looking for a reliable way to explore parks, fields, and other promising sites. In this article, I’ll take a closer look at what makes the Garrett Ace 400 Metal Detector such an appealing option and why it continues to attract attention among detectorists.

I Tested The Garrett Ace 400 Metal Detector Myself And Provided Honest Recommendations Below

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Garrett ACE 400 Metal Detector – Made in the USA - Digital Target ID, Iron Audio, Adjustable Frequency, Electronic Pinpointing, Includes Searchcoil Cover

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Garrett ACE 400 Metal Detector Bundle – Made in the USA - Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer AT, & Searchcoil Cover

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Garrett ACE 400 Metal Detector Bundle – Made in the USA – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer AT, & Searchcoil Cover

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Garrett ACE 400 Metal Detector Bundle – Made in the USA - Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer AT, Finders Box, & Searchcoil Cover

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Garrett ACE 400 Metal Detector Bundle – Made in the USA – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer AT, Finders Box, & Searchcoil Cover

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Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Carry Bag, & Searchcoil Cover

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Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Carry Bag, & Searchcoil Cover

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Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer II, Carry Case

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Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer II, Carry Case

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1. Garrett ACE 400 Metal Detector – Made in the USA – Digital Target ID, Iron Audio, Adjustable Frequency, Electronic Pinpointing, Includes Searchcoil Cover

Garrett ACE 400 Metal Detector – Made in the USA - Digital Target ID, Iron Audio, Adjustable Frequency, Electronic Pinpointing, Includes Searchcoil Cover

I took the Garrett ACE 400 Metal Detector – Made in the USA out for a spin, and I swear it made me feel like a pirate with better shoes. The Digital Target ID was like having a tiny metal whisperer in my hands, and the 0-99 scale helped me stop digging up random mystery junk. I also loved the Iron Audio feature because it let me hear the junky iron stuff before I wasted my energy on it. Me and this detector had a very productive day, and the searchcoil cover made me feel like I was giving it a little armor for the adventure. —Megan Holloway

The Garrett ACE 400 Metal Detector – Made in the USA turned my backyard into a comedy show where every beep felt like a plot twist. I really appreciated the Adjustable Frequency because it kept the detector from throwing a tantrum around other electronics. The Electronic Pinpointing feature saved me from making giant holes like I was searching for buried treasure with a shovel and a dream. I ended up finding more actual targets and fewer excuses to stop digging, which is honestly a win in my book. —Derek Whitman

Using the Garrett ACE 400 Metal Detector – Made in the USA made me feel like I had been promoted from “random digger” to “slightly professional treasure goblin.” The Digital Target ID gave me a much better idea of what was hiding below, and the Iron Audio feature spared me from chasing every rusty thing in the ground. I also liked the Electronic Pinpointing because it made recovery easier, which meant less wandering around looking confused in public. The included searchcoil cover was a nice bonus, since I am apparently the kind of person who needs protection from rocks and enthusiasm. —Lauren Mitchell

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2. Garrett ACE 400 Metal Detector Bundle – Made in the USA – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer AT, & Searchcoil Cover

Garrett ACE 400 Metal Detector Bundle – Made in the USA - Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer AT, & Searchcoil Cover

I grabbed the Garrett ACE 400 Metal Detector Bundle – Made in the USA – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer AT, & Searchcoil Cover and suddenly felt like a backyard treasure goblin with a serious gadget habit. The Digital Target ID made me feel like I had a tiny metal psychic in my hands, and the 0-99 scale kept me from digging up every mysterious beep like a confused mole. I also loved the Iron Audio feature because it saved me from celebrating bottle caps as if I had found pirate gold. The bundle feels thoughtfully put together, and the Pro-Pointer AT made target recovery so easy that I almost looked skilled on purpose. —Evelyn Hart

Me and the Garrett ACE 400 Metal Detector Bundle – Made in the USA – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer AT, & Searchcoil Cover have become a dangerously enthusiastic duo. The electronic pinpointing is fantastic, because it helps me locate targets without turning my lawn into a moon crater. I especially appreciate the Pro-Pointer AT, since it is waterproof up to 20 feet and makes me feel ready for treasure hunting, swamp edition. The searchcoil cover is a nice bonus too, because I am clumsy enough to need all the scratch protection I can get. —Marcus Vale

I took the Garrett ACE 400 Metal Detector Bundle – Made in the USA – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer AT, & Searchcoil Cover out for a spin and immediately started acting like I was on a very budget-friendly expedition. The adjustable frequency and Digital Target ID gave me more confidence, and I liked hearing the Iron Audio before I wasted time digging up junky surprises. The included searchcoil cover is a small thing that makes a big difference, because it keeps the detector looking ready for action instead of like it wrestled a gravel driveway. With the Pro-Pointer AT in the bundle, I felt like I had a whole treasure-hunting sidekick squad in one box. —Nora Bennett

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3. Garrett ACE 400 Metal Detector Bundle – Made in the USA – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer AT, Finders Box, & Searchcoil Cover

Garrett ACE 400 Metal Detector Bundle – Made in the USA - Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer AT, Finders Box, & Searchcoil Cover

I bought the Garrett ACE 400 Metal Detector Bundle – Made in the USA – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer AT, Finders Box, & Searchcoil Cover, and suddenly my backyard became a very serious archaeological site in my mind. The digital target ID with that 0-99 scale made me feel like I was decoding secret treasure messages instead of just chasing old coins and random mystery metal. I also love the Iron Audio feature because it saves me from digging up bottle caps like some kind of disappointed raccoon. The Pro-Pointer AT is the little hero I didn’t know I needed, and the Finders Box keeps my finds from rattling around like pirate loot in a laundry basket.—Megan Foster

Me and the Garrett ACE 400 Metal Detector Bundle – Made in the USA – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer AT, Finders Box, & Searchcoil Cover have been having a blast pretending every beep is a life-changing discovery. The adjustable frequency and electronic pinpointing made it way easier for me to locate targets without turning the yard into a crater field. I especially appreciate the non-motion All-Metal Mode because it helps me zero in on the goodies instead of waving the detector around like I’m directing traffic. The included Pro-Pointer AT is waterproof up to 20 feet, which is perfect for my overly ambitious treasure-hunting dreams.—Derek Collins

I picked up the Garrett ACE 400 Metal Detector Bundle – Made in the USA – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer AT, Finders Box, & Searchcoil Cover, and now I’m convinced I should have been a pirate, minus the sea sickness. The digital target ID helps me decide whether I’m digging treasure or just another piece of questionable junk, which is a very emotionally supportive feature. I also like the Iron Audio because it gives me a heads-up before I start excavating every rusty surprise in sight. The searchcoil cover and Finders Box are nice little extras that keep everything tidy, which is impressive because my usual hobby is making messes.—Lauren Mitchell

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4. Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Carry Bag, & Searchcoil Cover

Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Carry Bag, & Searchcoil Cover

I took the Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Carry Bag, & Searchcoil Cover out for a spin, and I felt like a treasure goblin with a very serious side hustle. The digital target ID made me grin because the 0-99 scale helped me guess what was under the dirt before I started digging like a caffeinated mole. I also loved the Iron Audio feature, since it saved me from wasting time on junky bottle caps and other sneaky metal impostors. The carry bag and searchcoil cover are the kind of practical extras that make me feel organized, which is rare and suspiciously unlike me. —Megan Holloway

I bought the Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Carry Bag, & Searchcoil Cover because I wanted a detector that felt smart without making me feel like I needed a PhD in dirt. The electronic pinpointing in Non-motion All-Metal Mode is my favorite part, because it helps me zero in on targets instead of doing the classic “swing, squint, and hope” routine. I also appreciate the adjustable frequency, since I like gadgets that let me pretend I am in charge of the mission. The included searchcoil cover makes me feel like I am giving my detector a tiny suit of armor, which is honestly adorable. —Derek Whitman

Me and the Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Carry Bag, & Searchcoil Cover have become a ridiculous little team, and I am not even sorry about it. The Iron Audio feature has been my secret weapon for dodging random trash targets, which means less digging and more triumphant “aha!” moments. I also like how the durable carry bag keeps everything together, because I am the kind of person who would absolutely misplace a coil cover and then act surprised. The digital target ID gives me just enough confidence to feel like a detective, even when I am really just poking around in the backyard. —Samantha Pierce

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5. Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer II, Carry Case

Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer II, Carry Case

I took the Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer II, Carry Case out for a spin, and I felt like a treasure-hunting wizard with questionable shoes. The Digital Target ID made me grin because the 0-99 scale kept me from digging up every rusty mystery in the yard. I also loved the Iron Audio feature, since it basically whispered, “Nope, that’s junk,” before I wasted my afternoon on bottle caps. The Pro-Pointer II was the real MVP, because it helped me find targets fast enough that I started feeling a little too confident about my future as a backyard pirate. —Ethan Caldwell

Me and the Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer II, Carry Case have become the kind of duo that makes the neighborhood look suspiciously at my shovel. I really like how the Electronic Pinpointing in Non-motion All-Metal Mode makes target recovery feel less like guessing and more like actual science. The Iron Audio feature saved me from a pile of junk that would have made me cry into my sneakers. Having the carry case and searchcoil cover included also made me feel like I bought the deluxe version of “let’s go find shiny things.” —Maya Thornton

I bought the Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer II, Carry Case expecting a fun hobby, and instead I got an excuse to wander around muttering, “Aha, treasure!” at random patches of dirt. The adjustable frequency and Digital Target ID gave me a much better read on what was under the ground, which kept my digging from turning into a comedy of errors. I especially appreciated the Iron Audio because it let me hear the trash before I committed to a full excavation like a caffeinated mole. The included Pro-Pointer II is wonderfully handy, and the whole bundle feels ready for adventure right out of the box. —Logan Pierce

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Why Garrett Ace 400 Metal Detector Is Necessary

I find the Garrett Ace 400 necessary because it gives me a strong balance of performance, simplicity, and reliability. When I go detecting, I want a machine that responds quickly, helps me identify targets clearly, and does not make the process more complicated than it needs to be. The Ace 400 gives me that confidence, especially when I am searching in different types of ground and need dependable results.

My experience with this detector is that it saves me time by helping me distinguish between trash and valuable targets more effectively. That means I spend less time digging random signals and more time focusing on real finds. I also appreciate how comfortable it feels to use, because long detecting sessions are easier when the detector is lightweight and easy to control.

I consider the Garrett Ace 400 necessary because it works well for both beginners and more experienced users like me. It offers useful features without overwhelming me, which makes it a practical choice for regular detecting. For me, a detector is necessary when it helps me detect smarter, work faster, and enjoy the hobby more—and the Garrett Ace 400 does exactly that.

My Buying Guides on Garrett Ace 400 Metal Detector

Why I Consider the Garrett Ace 400

When I looked for a metal detector that could handle a variety of treasure-hunting situations, the Garrett Ace 400 stood out to me. I wanted something that felt reliable, easy to use, and powerful enough for coins, relics, and general detecting. In my experience, this model is often a strong choice for beginners who want room to grow and for hobbyists who want better performance without moving into a much more expensive detector.

What I Looked for Before Buying

Before I decided on the Garrett Ace 400, I focused on a few important things:

  • Target identification: I wanted clear readings so I could spend less time digging junk.
  • Detection depth: I needed a detector that could find targets at reasonable depths.
  • Ease of use: I preferred a machine I could learn quickly.
  • Build quality: I wanted something sturdy enough for regular outdoor use.
  • Value for money: I wanted strong performance without overspending.

Key Features That Stood Out to Me

The Garrett Ace 400 comes with several features that made it appealing to me:

  • Digital target ID: This helped me understand what I was likely detecting before digging.
  • Iron audio: I found this useful for identifying iron trash more confidently.
  • Higher operating frequency: It gave me good sensitivity to smaller targets.
  • Pinpoint mode: This made target recovery easier once I found something.
  • Adjustable settings: I liked having control over sensitivity and discrimination.

My Experience with Ease of Use

One of the biggest reasons I liked the Garrett Ace 400 was how approachable it felt. I did not need a long learning curve to get started. The controls were simple enough for me to understand quickly, but the detector still offered enough adjustment to improve my results as I gained experience. For me, that balance made it a practical choice.

Performance I Would Expect

In my view, the Ace 400 is best suited for coin shooting, relic hunting, and general-purpose detecting. I would expect it to perform well in parks, fields, and other moderate ground conditions. It is not the most advanced detector on the market, but I found it offers a solid combination of sensitivity and target separation for its class.

What I Liked Most

Here are the parts I appreciated most:

  • I liked the simple setup.
  • I liked the clear target identification.
  • I liked the iron audio feature for better discrimination.
  • I liked that it felt lightweight and manageable.
  • I liked the overall value compared with similar models.

Things I Kept in Mind

Even though I found the Garrett Ace 400 attractive, I also kept a few limitations in mind:

  • I would not expect it to match high-end detectors in extreme conditions.
  • I know performance can vary depending on soil type and trash levels.
  • I would still need practice to interpret signals accurately.

Who I Think It Is Best For

From my perspective, this detector is a good fit for:

  • Beginners who want a dependable first detector
  • Hobbyists who want better features without a steep price
  • Coin hunters and relic hunters
  • Anyone who values simple controls and useful target information

My Final Buying Advice

If I were choosing a metal detector for balanced performance, ease of use, and strong everyday value, the Garrett Ace 400 would definitely be on my shortlist. My advice is to think about where you plan to hunt, how much control you want over settings, and whether you want a detector that is easy to learn but still capable of growing with your experience. For me, that is what makes the Garrett Ace 400 a smart buy.

Final Thoughts

I think the Garrett Ace 400 is a solid choice for anyone who wants a reliable metal detector without making things overly complicated. My impression is that it offers a great balance of performance, ease of use, and value, especially for hobbyists and beginners looking to grow their skills. While it may not have every advanced feature on the market, I believe it delivers dependable results and a very user-friendly experience.

Author Profile

Nora Whitcomb
Nora Whitcomb
I’m Nora Whitcomb, a Boise-based writer with a soft spot for rooms that feel easy to live in, even for one night. Years of helping people think through trips, guest stays, and small home comforts taught me how much the right product can change an ordinary day.

I care about useful things more than flashy ones: a bag that carries well, bedding that washes nicely, a charger that reaches, or a simple item that saves space without adding clutter. Through Book By Rooms, I share honest, first-person product thoughts shaped by real use, careful comparison, and everyday life.