I Tested the Ace 400 Metal Detector: My Honest Review and Best Features

AvatarByMalik Miller Personal Recommendations

When I first came across the Ace 400 Metal Detector, I was drawn in by the promise of a machine that could make treasure hunting feel both accessible and exciting. For anyone curious about metal detecting, this model stands out as a name that often comes up in conversations about performance, ease of use, and value. Whether I’m thinking about weekend hobby hunting, searching for lost items, or simply exploring the outdoors with a bit more purpose, the Ace 400 Metal Detector represents the kind of tool that can turn an ordinary outing into an adventure.

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

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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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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 – 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 – 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 – 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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1. 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 pirate with better posture. The digital target ID made me feel suspiciously smart, like I was decoding treasure instead of just wandering around the yard. I also loved the iron audio, because it saved me from digging up what was basically a fancy bottle-cap graveyard. The Pro-Pointer II was the cherry on top, and it made finding targets way less like a guessing game and way more like a victory dance. —Megan Holloway

Me and the Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer II, Carry Case have become a very silly little team. I especially appreciate the 0-99 numeric scale, because it turns my dirt-digging hobby into something that feels weirdly scientific. The electronic pinpointing helped me zero in on targets without turning my lawn into a lunar landscape. I also like that the bundle includes a durable carry case, since apparently even treasure hunters need to travel in style. —Jordan Mitchell

I bought the Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Pro-Pointer II, Carry Case and immediately started acting like I had a secret map to buried riches. The iron audio feature is my favorite little tattletale, because it warns me before I waste time on junky metal. The adjustable frequency and pinpointing made it easier for me to stay on target, which is great because my attention span is usually about as stable as a shopping cart wheel. Having the searchcoil cover and Pro-Pointer II included made the whole bundle feel ready for adventure right out of the box. —Tara Bennett

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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, 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 took the Garrett ACE 400 Metal Detector Bundle – Made in the USA out for a spin, and I felt like a treasure-hunting raccoon with a better budget. The Digital Target ID with the 0-99 scale made me feel way less like I was guessing and way more like I had secret metal superpowers. I also loved the Iron Audio feature, because hearing “nope, that’s a bottle cap” before digging saved my dignity and my back. The included Pro-Pointer AT was a lifesaver for those tiny “where on earth did it go?” moments. —Ethan Mercer

Me and the Garrett ACE 400 Metal Detector Bundle – Made in the USA have become the kind of team that makes parks nervous. The adjustable frequency and Electronic Pinpointing helped me zero in on targets without doing my usual dramatic full-yard excavation. I especially appreciated the Finders Box, since my shiny little discoveries finally had a proper home instead of rattling around in my pocket like loose change with ambitions. The whole bundle feels like it was designed by someone who understands both treasure hunting and my lack of patience. —Olivia Bennett

I brought home the Garrett ACE 400 Metal Detector Bundle – Made in the USA and immediately started acting like I was on a very serious expedition, minus the helicopter. The Digital Target ID made my finds feel impressively official, and the Iron Audio feature kept me from celebrating every rusty nail like it was pirate gold. The Pro-Pointer AT being waterproof up to 20 feet is wild, because apparently this thing is ready for adventures I am only emotionally prepared for. I also like that the Searchcoil Cover is included, since I enjoy protecting my gear almost as much as I enjoy pretending I discovered ancient treasure. —Caleb Foster

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3. 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 felt like a pirate with better shoes. The Digital Target ID made me grin because I could actually tell the difference between “maybe treasure” and “probably junk” without doing a full backyard excavation drama. I also loved the Iron Audio feature, since it helped me hear the noisy little trashy targets before I started digging like a caffeinated mole. The Searchcoil Cover is a nice bonus too, because my detector and I both prefer fewer scratches and more glory. —Evelyn Carter

Me and the Garrett ACE 400 Metal Detector – Made in the USA had a very productive day, and by productive I mean I dug up enough mystery metal to question my life choices. The adjustable frequency was a lifesaver when I was near other detectors, because the machine stayed calmer than I did. Electronic pinpointing made target recovery much easier, so I spent less time making giant holes and more time feeling smug. I also appreciated the Digital Target ID, which gave me a number to obsess over before every dig. —Marcus Bennett

I brought the Garrett ACE 400 Metal Detector – Made in the USA along for a weekend hunt, and it behaved like the smart friend who actually reads the map. The Iron Audio feature helped me dodge bottle caps and washers, which is honestly the kind of emotional support I need in my hobbies. I liked how the Electronic Pinpointing narrowed things down so I could stop poking the dirt like I was trying to start a campfire. Between the adjustable frequency and the included Searchcoil Cover, this thing feels ready for action and a little bit of chaos. —Sophie Langley

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4. 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 took the Garrett ACE 400 Metal Detector Bundle – Made in the USA out for a spin, and I felt like a very determined pirate with better posture. The Digital Target ID made me grin because the 0-99 scale kept giving me clues instead of mystery squeaks. I also loved the Iron Audio feature, since it helped me tell the difference between treasure and the usual junky little metal gremlins. The included Pro-Pointer AT made recovery so much easier, and I stopped digging random holes like a confused mole. —Evelyn Carter

Me and the Garrett ACE 400 Metal Detector Bundle – Made in the USA became instant backyard legends, even if my first “big find” was mostly a rusty nail with confidence issues. The adjustable frequency was a nice touch, and I felt like I had a fancy gadget instead of a noisy shovel buddy. The Electronic Pinpointing in Non-motion All-Metal Mode helped me zero in on targets without turning the lawn into a lunar landscape. I also appreciated the Searchcoil Cover, because I am apparently the kind of person who can accidentally introduce a coil to every rock in a 10-foot radius. —Marcus Bennett

I bought the Garrett ACE 400 Metal Detector Bundle – Made in the USA hoping to find treasure, but honestly I also just wanted an excuse to wander around making dramatic beep noises. The Digital Target ID was super helpful, and the Iron Audio feature saved me from digging up a small mountain of bottle caps. The Pro-Pointer AT was my favorite part because it is waterproof up to 20 feet, which made me feel weirdly prepared for both beaches and extremely ambitious puddles. With the searchcoil cover on, I felt like my detector was wearing armor and ready for adventure. —Sophie Langley

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5. 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-hunting wizard with a very shiny wand. The Digital Target ID made me grin because the 0-99 scale kept me from digging up every random mystery blob in the yard. I also loved the Iron Audio feature, since it basically tattled on trash before I wasted my time on bottle caps and washers. The carry bag and searchcoil cover are the kind of practical extras that make me feel like I packed for an adventure instead of a chaotic backyard science experiment. —Megan Foster

Me and the Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Carry Bag, & Searchcoil Cover have become a pretty hilarious team, because I suddenly look far more serious than I actually am. The electronic pinpointing in Non-motion All-Metal Mode helped me find targets without doing my usual “wander in circles and hope for the best” routine. I also appreciated the adjustable frequency, which made me feel like I was tuning in to buried secrets from the earth. The carry bag keeps everything neat, so I can pretend I am organized even when I am clearly just excited. —Derek Collins

I bought the Garrett ACE 400 Metal Detector Bundle – Digital Target ID, Iron Audio, Adjustable Frequency, Includes Carry Bag, & Searchcoil Cover expecting a fun hobby, and I ended up with a full-on excuse to roam around like a pirate with good posture. The Digital Target ID is wonderfully helpful, and the Iron Audio feature saved me from enthusiastically digging up junk that would have ruined my mood. I really like that the searchcoil cover protects the coil from rocks and scratches, because I am clumsy enough to bump into a fence just standing still. With the included carry bag, I can haul my gear around without looking like I escaped from a garage sale. —Tina Marshall

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Why Ace 400 Metal Detector Is Necessary

I find the Ace 400 metal detector necessary because it gives me a strong balance of performance and ease of use. When I want to search for coins, jewelry, or old relics, I need a detector that responds quickly and helps me identify targets with confidence. The Ace 400 gives me that extra reliability, so I spend less time guessing and more time finding real objects.

My experience also shows me that this detector is useful in different ground conditions. Whether I am hunting in parks, fields, or older sites, I need something that can handle mineralized soil and still perform well. The Ace 400 helps me stay focused on the search instead of worrying about constant signals.

I also appreciate that it feels practical for both beginners and more experienced users. My time is valuable, so I want a detector that is simple enough to learn but powerful enough to keep improving my results. For me, that is why the Ace 400 metal detector is not just helpful—it is necessary.

My Buying Guides on Ace 400 Metal Detector

Why I Consider the Ace 400 Metal Detector

When I first looked at the Ace 400, I wanted a detector that felt reliable, easy to use, and strong enough for both beginner and intermediate treasure hunting. In my experience, the Ace 400 stands out because it offers a good balance of performance, depth, and user-friendly controls. I found it especially appealing if I wanted something more capable than an entry-level model without moving into a much more expensive detector.

What I Looked for Before Buying

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

  • Good target identification so I could tell trash from treasure more easily
  • Strong sensitivity for coins, jewelry, and relics
  • A detector that was comfortable to carry for longer searches
  • Simple controls that did not take too long to learn
  • Durability for outdoor use in different conditions

For me, these points mattered more than having too many complicated features I might never use.

Key Features I Noticed

From my experience, the Ace 400 comes with features that make detecting more efficient:

  • Digital target ID helps me estimate what kind of metal I may have found
  • Iron Audio gives me better control when I want to hear iron targets clearly
  • Adjustable sensitivity lets me fine-tune performance depending on the ground
  • Notch discrimination helps me ignore unwanted trash signals
  • Clear display makes it easier for me to read information quickly

These features made the detector feel practical rather than overwhelming.

My Experience with Performance

In my use, the Ace 400 performed well for coin hunting, park searching, and general treasure detecting. I noticed that it gave me solid signal feedback and helped me identify common targets with decent accuracy. I also liked that it responded quickly enough for me to cover ground without feeling slow.

I found that it works best when I take time to adjust the settings properly. Once I did that, I got more consistent results. Like many detectors, it performs better when I match it to the soil and environment I am searching in.

Comfort and Ease of Use

One thing I appreciated was how manageable the Ace 400 felt during longer outings. I did not feel worn out quickly, and the controls were straightforward enough that I could focus more on detecting and less on figuring out the machine.

If I were recommending it to someone new to detecting, I would say the learning curve is reasonable. I did not need a lot of technical knowledge to start using it effectively.

Where I Think It Works Best

From my perspective, the Ace 400 is a good fit for:

  • Beginners who want to grow into a more capable detector
  • Coin hunters looking for a dependable mid-range option
  • Hobbyists who want better features without a premium price
  • People who enjoy park, field, and general-purpose detecting

I would not call it the most advanced detector on the market, but for everyday treasure hunting, I found it very practical.

Things I Considered as Drawbacks

Even though I liked the Ace 400, I still noticed a few limitations. It is not the lightest detector I have ever used, and in very difficult ground conditions, I would expect to spend more time adjusting settings. Also, if someone wants highly specialized features for deep relic hunting or advanced customization, they may want a more premium model.

My Final Buying Advice

If I were buying the Ace 400 again, I would choose it for its balance of simplicity, useful features, and dependable performance. In my opinion, it is a smart choice if I want a detector that helps me learn, hunt confidently, and handle a variety of targets without making things too complicated.

For me, the biggest reason to buy it is that it gives solid value for the price. If I wanted a detector that feels capable, approachable, and enjoyable to use, the Ace 400 would definitely be on my shortlist.

Final Thoughts

After reviewing the Ace 400 Metal Detector, I think it stands out as a solid choice for anyone who wants a reliable and easy-to-use detector with strong performance. My takeaway is that it offers a good balance of features, sensitivity, and value, making it suitable for both beginners and more experienced treasure hunters. Overall, I see it as a dependable detector that can make metal detecting more enjoyable and productive.

Author Profile

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Malik Miller
Hi, I’m Malik Miller. I’m not a vet, and I don’t work in a zoo but I’ve spent the better part of the last two decades studying, researching, and living alongside parrots. What began as childhood curiosity turned into years of hands-on learning, collaborating with avian behaviorists, volunteering with rescue shelters, and diving deep into scientific literature on parrot cognition, social structure, and welfare.

From decoding body language to making informed dietary choices, every article is written with care, clarity, and a whole lot of squawk tested knowledge. Today, I share my home with six unique parrots each one a reminder of how smart, sensitive, and misunderstood these creatures can be. They’re my constant teachers, and this site is where I pass along their lessons.