DetectorMods

Upgraded GPX 4500 up against the Minelab GPZ 7000

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Big Ballarat gold nugget found with a modified GPX 4500

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The world's most advanced
Minelab detector upgrades

We provide upgrades and modifications to all Minelab SD, GP, GPX and GPZ pulse-induction metal detectors. Proven by professional prospectors to be the most technically advanced Upgrades and Modifications available, we guarantee to make your detector detect deeper targets while improving sensitivity and quietness on even the most mineralised ground. A five-year workmanship warranty covers all detector upgrades.

Read about the new 2024 upgrades

Introducing the most effective EMI filter for pulse-induction detectors.

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2025 Upgrades & Modifications

All with a 5-year Workmanship Warranty

GPZ 7000

Minelabs flagship detector is an amazing machine, but we can make it even better.

Our GPZ 7000 upgrades are designed to maximize your detector’s performance seamlessly. By upgrading key components on the motherboard and eliminating noise from critical circuitry, we deliver improved sensitivity and depth. These internal enhancements operate automatically, so there are no extra controls to manage.

You’ll experience a smoother, quieter machine with superior depth and sensitivity, without any additional complexity.

GPX 6000

The 6K is amazingly sensitive, and lightweight, but considered chattery in its standard form.

Our GPX 6000 upgrades are engineered to optimize your detector’s performance. By internally upgrading components and reducing noise, we transform the notoriously noisy GPX 6000 into a quieter, smoother-operating machine.

With no extra controls to manage, you can enjoy enhanced depth and sensitivity with the same operation you are used to, ensuring a more efficient and effective detecting experience.

GPX Series

  • GPX 4000
  • GPX 4500
  • GPX 4800
  • GPX 5000

Our new multi-module input stage reduces noise in the most critical part of the detector by 75% at a minimum.

The Updated Frequency control allows for two hundred and fifty-five positions, providing a 25% swing to pulse width. Perfect for optimising your detector for any aftermarket coil/target size.

Tests have shown that these new upgrades beat the SDC detectors on small gold at depth and will easily compete with the flagship GPZ-series detector on both small and large gold.

While we priorise our Frequency control and new input stage, our front-end gain control is also available for those dealing with disasterous ground, and coils that require extra control.

GP Series

  • GP extreme
  • GP 3000
  • GP 3500

Our 5th Gen Front-End variable gain control allows for optimal signal to noise management, significantly improving sensitivity and depth capabilities.

Now with a fully variable frequency control—similar to the GPX series upgrades—you can optimise for a much wider range of target sizes.

The Latest GP series upgrades will have your machine handling any ground type with ease. A sensitive boost mode is also available for all GP series detectors.

If all of the above does not satisfy you, then we can install out input stage module upgrade to lower the noise floor and boost performance across the board.

SD Series

  • SD 2000
  • SD 2100
  • SD 2200

Fully variable frequency—as on the GP series upgrades— is available for the 2200 and 2100, while an ultra-deep mode is unique to the SD 2000.

Front end gain control is available for all SD series detectors, and is a must for these older detectors which were built to punch deep on large gold.

Unique to the 2100 is a switch to allow 3 or 4 pulses, which can improve the detector's ability to deal with tricky ground. The 2200 can have provision added for a quick track handle much like the GP-3500 and newer detectors.

Gold Monster 1000

The GM 1000 is the first VLF detector to be upgraded at Detectormods. They are a great machine on small gold, and with our upgrades, they can be even better.

Much like our 7K and 6K upgrades we have reduced the noise floor and improved the sensitivity of the detector. All while keeping the detector simple to use and not adding any extra controls to manage.

While they dont have the punch as a Pi machine, they are a great lightweight detector that are quick and easy to setup.

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Shipping your detector

To ensure your detector's safety, we've written a general guideline for packaging and sending your control box. We follow these guidelines while repackaging your detector.

Packaging

We only need your control box to perform the upgrades (if you have trouble removing quick track handles, feel free to post it, if easier.)To assure it will be safe while in the post. Be sure to use some packaging material around the plastic end-caps and or screen.

Make sure you've completed an order form. If you're unable to print, write clearly your contact details, services you would like performed to your detector, and any other information necessary.

We suggest packing your control box in either an appropriate-sized cardboard box or a pre-paid satchel available from your local post office. Ensure you include your order form with your contact details.

Print a shipping form

If you can't print a shipping form, write your contact details on paper and ship them with your detector. Our shipping address is available on our contact page.

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Quotes and payments

Contact us for payment options and special quotes such as repairs and additional services.