Teknetics Delta 4000 Metal Detector Review

As a beginner who is foraying into the hobby of metal detecting, choosing the right metal detector is extremely important as the selection often has an impact on whether you like the metal hunting hobby or not. Purchase a metal detector with only some very basic features and you will grow out of the limited features pretty soon. On the other hand, if you go for an advanced detector, the features will be too difficult for a beginner to understand.

While models exclusively created for beginners are often recommended for the ones starting with metal hunting, it is crucial to go with a detector that can help you grow as a metal hunter and improve your hunting skills. A perfect combination of basic and advanced features is the Delta 4000 Metal Detector from Teknetics.

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The metal detector has improved target identification, large LCD, preset operating modes, pinpoint mode and a lot more to allow the beginners to hunt like a pro. Moreover, the advanced features of this Teknetics metal detector make it an excellent choice for professional hunters who are looking for an affordable and high-performance metal detector. Everything good and bad about this metal detector will be discussed in detail in this Teknetics Delta 4000 Metal Detector review.

FeaturesTeknetics Delta 4000 Metal Detector

Improved Target Identification
Teknetics Delta 4000 Features a large, easy to read LCD. It has advanced reporting capabilities, and the detected targets are displayed on the screen, making it easier for you to consider digging for the target or not. The LCD will provide details of a variety of targets, like foil, iron, aluminum, nickels, half dollars, dimes quarters, etc.

Advanced Depth Guide
The detector also has an advanced depth guide to help you decide if digging for a particular target is, in fact, worth the energy and time. For instance, if the detector emanates a loud tone for indicating that a target is close to the ground surface, but the depth guide indicates that the object is pretty deep. While the target icon might be correct with the target number, the loud tone and depth suggest that some large target is deep into the ground. While this is not always true, but provides you with a useful warning that the large target can be buried wires or pipe, and you should dig carefully. All these indicators make it easier for you only to dig for targets that are truly valuable.

Tone Discrimination
The metal detector has three different discrimination tones to allow you to know the type and depth of the target. For instance, if the sensor detects a dime, it will give a soft tone ad if it detects a large target close to the ground surface, the tone will be louder. This helps you in knowing the type of target and its depth without even looking the LCD.

Pinpoint Feature
The pinpoint feature of this Teknetics metal detector does an excellent job of allowing you to reach exactly above the target, substantially reducing the time and damage that is normally spent on digging the plugs. This feature provides you with accurate depth at which the target is in inches, enabling you to dig accurately. A large number of Teknetics metal detectors reviews also mention that the pinpoint feature of Delta 4000 is pretty impressive and makes hunting less time consuming and more rewarding.


Adjustable Sensitivity
The Teknetics metal detector has an adjustable sensitivity which you can adjust as per the type of ground you are hunting on. If you are searching for targets in highly mineralized soil or place that is full of trash, you can adjust the sensitivity accordingly to allow the detector only to detect the valuable target. But make sure that the sensitivity is not too high as the detector might miss some important targets.

Graphics and Numeric Target ID
While the majority of the metal detectors only feature numeric target ID, Delta 4000 has both, numeric as well as graphic. The problem with the detector that only feature numeric ID is that it takes time for the beginners to understand the numeric target ranges and until the time they don’t understand the meaning of each range and number, the numeric ID is not helpful at all. But with both numerical and graphical ID, users of Delta 4000 can rest assured that they will always know what their detector has detected.

Comfortable Design
Delta 400 features an 8” concentric search coil that is known for its efficiency and functionality. The detector itself is very light and weight and highly comfortable to use. As a result, you can hunt for hours at a time without any fatigue.

Excellent Battery Life
If we talk about the battery life, the metal detector is optimized for enhanced efficiency. It is powered by 1 x 9V battery which lasts for more than 20 hours. Reduced replacement of batteries means reduced cost of operating this detector and fewer chances of having the hunting expedition cut short due to the battery. Moreover, it is not very difficult to carry a single 9V battery along with you for expeditions as a backup.


  • Manufacturer- Teknetics (First Texas)
  • Model Name- Delta 4000
  • Model Number- B001F7BEWK
  • Color- Black
  • Weight- 2.95kg
  • Dimension- 11.2 x 6.5 x 40 inches
  • Operating Frequency- 7.8 kHz
  • Search Coil- 8” Concentric
  • Warranty- 5 years


  • 8” concentric search coil
  • Large LCD
  • Graphic and numeric ID system
  • All metal mode
  • Discrimination mode
  • Preset ground balance
  • Three tone discrimination
  • Adjustable sensitivity
  • Battery life indicator
  • Headphone jack
  • Intuitive menu system
  • Powered by a single 9V battery
  • Battery life of more than 20 hours
  • Easy to use
  • Light in weight
  • 5-years limited manufacturer’s warranty


  • Some Teknetics metal detectors reviews suggest that Delta 4000 is highly sensitive and gives way too many false signals
  • Does not remember the settings and you need to adjust the settings every time you turn on the detector


With some useful advanced features, Delta 4000 does an excellent job of preparing you for advanced professional detectors. The detector is extremely easy to use, and the Teknetics Delta 4000 manual does an excellent job of explaining its features and settings in great detail. While some reviews suggest that the detector is highly sensitive, it is not very difficult to adjust the sensitivity of this detector as per the ground surface to eliminate the false signals. All-in-all, Delta 4000 is undoubtedly a reasonably priced choice beginners as well as professional metal detectors.

While every important aspect of this detector has been covered in this Teknetics Delta 4000 Metal Detector review, you can always send in your queries with the help of the comments section below. Moreover, you can also browse through other great advanced and beginner models, and even learn more about metal detectors and their features on other pages of our website.

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