Teknetics Delta 4000 Metal Detector Review

Beginner alert: Metal detecting has become more interesting and user-friendly because of Teknetics Delta 4000, a trusty companion in hunts.

Delta 4000: a Step Ahead

Teknetics has been in the business for over 30 years. It has created entry-level metal detectors in that time span, building its reputation among serious hobbyists. If thinking about making your first purchase brought you here, then you are in the right place. Here we present to you the Teknetics Delta 4000.

A user-friendly digital model, the Delta 4000 is designed with the newbie in mind. When getting your feet wet in this hobby, one of the most important considerations you should have is the discrimination performance. We will look at this and more features in the rest of the review.

Read on to know the pros and cons of getting Teknetics Delta 4000. Join us at we look up close at its functionality, and how it fares as a beginner's model. At the end of the article, we hope to help you find the answer to the most-pressing question: Is this machine worth your money?

Table of contents

Pros & Cons

Things to consider when looking at the Teknetics Delta 4000 Metal Detector

A white scale in a green circle balancing the pros and cons of the product reviewed


  • Easy to assemble, the Delta 4000 is a user-friendly machine that helps beginners learn the basics of metal detecting.
  • This product sports excellent feedback, discrimination, and depth estimation to make your hunt more productive -- all while allowing you to choose target materials to detect.
  • It is also able to detect many types of metals, so you can have an enjoyable and enhanced first experience.


  • The Delta 4000 does not work in saltwater environment but is still perfect in the beach and sand when kept dry.
  • It is on the lower end of mid-priced metal detectors for beginners, so those on a tight budget might stay away from it.

Features & Benefits

User-friendly Unit

If you want to take a dip into coin shooting, relic hunting, or gold prospecting, you can have a trusty companion in the Delta 4000 metal detector. Buying this unit is your step one to getting started. It only takes a few minutes to assemble. And then you are good to go. Anyone without prior experience can tinker with this tool, as it contains the bells and whistles that make this possible. What we're saying is that, in terms of functionality, this device will leave you busy learning the ropes. It will engage you to understand more the machine and the hobby itself.

Even with zero knowledge, you can start scanning across mild soils where you won't be needing ground balance. And when it comes to beginnings, users can always work this unit out in the backyard. The Delta 4000 is lightweight that long periods of sweeping are not going to be a bother. We believe that its ability to differentiate metals is solid. This function is enough to educate you on the various target objects and how to match them with the detector's signals. This alongside other features will save you time. For starters, the device can already find you several items in just a matter of an hour.

Discrimination Modes

The Teknetics Delta 4000 dishes out an adjustable discrimination setting. This setting differentiates the trash from the treasure. It is also one thing that newbies must familiarize themselves with. In addition, the three-tone audio mode ID helps you identify the metals according to tones. Junk can be distinguished through a garbled noise, while high-value materials are detected with a high-pitched sound. Aside from this, you get a two-digit numeric target ID to further determine whether to dig in. The sensitivity can be lowered as well, depending on the situation in the surrounding area. It must be lowered when there are nearby power lines or heavy ground mineralization, for instance.

The adjustable settings can be an advantage for new users to learn more about the basics of metal detecting. And depth is another basic element for you to know. This can refer to how deep can your metal detector get you when you are sweeping the ground. This can also pertain to the depth display, which approximates how deep an item is buried. All of these functions must work together so you can have a fun and productive hunt. If you are on the lookout for a companion, then these are ones you should always check for. With the Delta 4000, you are assured of a reliable device with all these bells and whistles.

Digital & Lightweight

The smallest traces of metal can be detected with a digital unit. All settings are adjusted through a touch of a key or button. In turn, this enables you to custom-fit the functions so you can focus on scanning the area right away. This digital bad boy includes a running depth display and an all-metal mode. Speaking of depth, the Delta 4000 has a very good reception at 4-6 inches. It can find valuable items up to 7-8 inches as well. The coil can be submerged in water found in lakes and rivers, so you can explore in such places where people might have settled in the past.

This machine is portable and lightweight at 3.5 pounds. With a padded armrest and comfort hand grip, it does not tire the user easily. It is great for wandering into the woods, a gold field, or the park. It fits a lot of preferences that you can choose to concentrate on one kind of detecting, make the switch, or try another whenever you like. Featuring an arc stand, a 3-pile system, and an adjustable aluminum stem, this product is durable. You can also pass it on to the kids. Or even use it alternately with other devices once you have built your collection.

25-hour Battery Life

Finally, the Teknetics Delta 4000 metal detector runs for up to 25 hours on single 9-volt battery. It has a 7.8 kHz operating frequency. You'd definitely want a stable and strong metal detector when you are beginning. This will get you into learning mode while making the experience enjoyable. Again, the power of this device is in the 8-inch waterproof open-face search coil. You can submerge it in water and sand, but not in salty water and sand. And keep in mind that, like many of this entry-level all-around type, it is waterproof but with limitations.

Remember, too, that it has an adjustable stem so if you are 6' upward, you can still use this without hunching and hurting your back. As we mentioned earlier, this is great for kids, too. Anyone can try treasure hunting with the Delta 4000. The best thing its price. It falls within the lower to middle end of the mid-prices entry-level units. Knowing that it is from Teknetics makes it easier to shell out money. You are sure you're getting something that is worth every penny. And it's something that can last you a long time even if you purchase it as a beginner's tool.



The Teknetics Delta 4000 metal detector is a great tool for beginners. It has all the basic features integrated in a digital unit. The adjustable discrimination and sensitivity will eliminate the junk, so you can focus on the valuables during your hunt. This product also sports excellent feedback and depth reception. It helps you determine the buried objects through its two-digit target ID. IT detects many types of metal. Starting out in this hobby is within your reach because of this model, which is perfect for beginners. The device is easy to assemble and use. Just be diligent about learning the ropes and the meaning of the settings before jumping out.

Lightweight and portable, the Delta 4000 is designed for the convenience of its users. They can be carried by children and adults alike. And they can be brought to different locations, such as rivers and lakes, the woods, the park, or a gold field. Your comfort is also top of mind for its creator, Teknetics, as it made sure you can use this for a long time without getting tired. The padded arm rest and comfort hand grip assist in providing you an experience you cannot forget. And because you are not frustrated, there is the possibility of trying again when your first hunt does not go well.

Exclusive Newsletter Club