Understanding the technology inside your metal detector is the difference between guessing at signals and actually knowing what they mean.
Most detectors look similar from the outside: a shaft, a coil, a screen. Underneath that, they operate on fundamentally different principles, built for different ground conditions, different target types and different depths. The machine that pulls silver coins from a New England farm field is not necessarily the right machine for a gold prospector in the Australian outback. Knowing why makes you a sharper buyer and a better hunter in the field.
This guide walks through every major metal detection technology in plain language: how each one works, what it was designed for, and where it falls short. Links throughout connect you to the relevant detectors and accessories at Serious Detecting. You can browse all metal detectors here, or jump to a brand: Minelab · Garrett · Nokta · XP · Fisher.
Just starting out? The How Metal Detectors Work page covers the basics, and our Getting Started Guide walks you through everything a first-time detectorist needs to know.
Key Takeaways
- VLF transmits a continuous signal at one frequency and gives excellent target identification, but it can struggle in heavily mineralized soil and wet salt sand.
- Simultaneous multi-frequency (SMF) runs several frequencies at once, which keeps Target ID stable across parks, fields and salt beaches. It is the best all-around choice for most hunters.
- Pulse induction (PI) fires pulses and reads how the signal decays. It handles the worst ground and salt water, with limited discrimination.
- Hybrid and ZVT systems are built for gold: Minelab's Multi-Au Technology with Hybrid SMF-PI in the Gold Monster 2000, and ZVT in the GPZ series.
- The coil, ground balance, recovery speed and sensitivity settings matter as much as the technology badge on the box.
VLF (Very Low Frequency) Technology
VLF is the most widely used metal detection technology in the world. It powers everything from entry-level beginner machines to advanced platforms, and it forms the foundation of most detectors sold today, including many high-end models.
How VLF Works
A VLF detector uses two coils inside the search head. The transmit coil sends a continuous alternating electromagnetic field into the ground at a fixed frequency, measured in kilohertz (kHz). When this field encounters a metal object, it induces tiny electrical currents, called eddy currents, on the metal's surface. Those eddy currents generate their own secondary electromagnetic field, which the receive coil picks up and sends to the control box for processing.
The detector analyzes the phase shift between the transmitted and received signals. Different metals produce different phase shifts, which is how the detector estimates target identity (Target ID): distinguishing a silver coin from a pull tab, or a gold ring from a foil wrapper.
VLF Operating Frequencies
The frequency a VLF detector runs at directly affects what it detects best:
Below 8 kHz (low)
Best depth on large, high-conductivity targets: silver coins, copper relics and large artifacts. Less sensitive to tiny or low-conductivity targets.
8 to 15 kHz (mid)
The all-purpose sweet spot for coin shooting, general jewelry hunting and mixed-target sites.
15 to 40 kHz (high)
Better sensitivity to small, low-conductivity targets: fine gold jewelry, thin chains, small coins and shallow gold nuggets.
Above 40 kHz (very high)
Specialized for very small gold: fine nuggets, flakes and tiny natural gold. Less effective on large targets at depth.
No single frequency does everything perfectly. This is why selectable-frequency and simultaneous multi-frequency machines have become so popular. See the Multi-Frequency Technology section below.
VLF Strengths and Limitations
Strengths
Excellent target identification and discrimination, lightweight and energy-efficient, works well in mild-to-moderate soil, and supports a wide variety of interchangeable search coils.
Limitations
Single-frequency VLF machines can struggle in heavily mineralized soil and wet salt sand. Ground mineralization creates competing electromagnetic responses that can mask real targets, cause false signals or reduce depth. Simultaneous multi-frequency technology largely addresses this.
Pulse Induction (PI) Technology
Pulse induction detectors operate on a completely different principle from VLF. Instead of a continuous frequency, PI machines fire rapid, powerful pulses of electrical current through the coil and then measure the signal that decays afterward. The rate and shape of that decay tells the detector what is below.
How PI Works
Each pulse creates a brief, intense electromagnetic field that penetrates deep into the ground. When the pulse stops, the field collapses rapidly, but metal objects slow this collapse slightly. The detector samples the signal at precise intervals after each pulse and compares the decay pattern. Ground minerals decay almost instantly; metals take slightly longer. By analyzing this difference, a PI detector can find deep metal targets even through extreme ground mineralization.
Where PI Excels
- Gold prospecting in highly mineralized soil. PI machines handle iron-rich red soils and laterite (common in gold country) far better than VLF detectors. The Minelab GPX 6000 and Garrett Axiom are both built for this job.
- Wet saltwater beaches. Salt is largely invisible to PI, while single-frequency VLF machines are highly susceptible to salt interference.
- Extreme depth on large targets. PI typically achieves greater depth on large objects than comparable VLF machines.
- Underwater hunting. Several dedicated dive detectors are PI-based for the same salt-handling reason.
PI Limitations
The trade-off for PI's raw depth and ground rejection is limited target discrimination. Traditional PI machines struggle to distinguish a gold ring from a rusted nail: they detect metal, not metal type. This makes them less suitable for coin shooting or relic hunting in iron-littered sites. Some modern PI designs add a basic iron indication (the Garrett Axiom has an Iron Check function that works with DD coils on strong signals), but VLF and multi-frequency machines still lead by a wide margin when it comes to telling targets apart.
Browse pulse induction metal detectors →
BFO (Beat Frequency Oscillation) Technology
Before VLF became the standard, BFO was the dominant metal detection technology, and understanding it puts everything else in this guide into perspective. BFO detectors were the workhorses of the hobby from the 1950s through the mid-1970s, and traces of the design still show up in the very cheapest toy detectors sold today.
How BFO Works
A BFO detector uses two radio frequency oscillators running at slightly different frequencies. One is fixed inside the control box. The other runs through the search coil, where the coil acts as an inductor, so its frequency shifts slightly depending on what is near it. The detector compares the two frequencies and amplifies the difference, known as the beat frequency, into an audible tone through the speaker or headphones.
When the search coil passes over metal, the metal changes the inductance of the coil, which changes its oscillating frequency. That shift alters the beat tone the operator hears: a rising pitch, a falling pitch or a change in beat rate, depending on the design and the target. The operator learns to read these changes through experience.
Why BFO Was Eventually Replaced
BFO technology has several fundamental limitations that VLF and PI machines address far better:
By the late 1970s, improved VLF designs with ground balance capability had made BFO technology largely obsolete for serious detecting. The simplicity of the BFO circuit (very few components, easy to build cheaply) is why it still appears in inexpensive novelty and toy detectors, but no major manufacturer produces BFO machines for the hobbyist or professional market today.
BFO's Place in Detecting History
It would be wrong to dismiss BFO entirely. The technology introduced millions of people to metal detecting, helped establish the hobby commercially, and drove the engineering curiosity that led directly to the VLF machines that followed. Many legendary finds, particularly in the early years of organized relic hunting and treasure hunting in the US and UK, were made with BFO machines. The operators simply learned to work with the technology's limitations rather than against them.
If you are researching the history of the hobby, BFO detectors from manufacturers like White's, Garrett and Fisher (then known as Fisher Research Laboratory) represent a fascinating chapter in detecting's evolution. For practical detecting today, though, even the most affordable modern VLF machine will outperform the best BFO detector ever made.
Multi-Frequency Technology
Multi-frequency technology is the biggest advancement in metal detecting of the past decade. Instead of being locked to a single frequency, multi-frequency detectors transmit several frequencies simultaneously, or offer a range of selectable individual frequencies, giving you the advantages of both low and high frequencies.
Simultaneous Multi-Frequency (SMF)
SMF detectors broadcast multiple frequencies at the same time and combine the results in real time. This delivers the depth advantage of low frequencies and the small-target sensitivity of high frequencies in a single coil sweep. Key benefits include:
- Stable, accurate Target ID in wet salt sand and heavily mineralized soil
- Better depth on both low-conductivity targets (gold, small coins) and high-conductivity targets (silver, copper)
- More consistent performance across parks, beaches, fields, fresh water and salt water
Today's leading SMF platforms include:
Selectable Single Frequency
Some detectors let you choose from multiple individual frequencies but only run one at a time. This still provides excellent flexibility: dial in the best frequency for your target type and soil without the complexity of full simultaneous transmission. The Minelab X-Terra Pro takes this approach with Pro-Switch, which lets you switch between 5, 8, 10 and 15 kHz. Many advanced machines, including the XP DEUS II, Nokta Legend 2 and Garrett ACE Apex, offer both selectable single-frequency operation and full SMF, so you get the best of both worlds.
Browse multi-frequency metal detectors →
Minelab Proprietary Technologies
Minelab has developed a family of proprietary detection systems over more than 35 years. Each was purpose-built for a specific challenge. Understanding them helps you choose the right Minelab detector for your hunting style, and decode the spec sheet of an older machine.
| Technology | Type | Found in |
|---|---|---|
| Multi-IQ / Multi-IQ+ | Multi-frequency | Vanquish, X-Terra Elite, Equinox 700 and 900 (Multi-IQ); Manticore (Multi-IQ+) |
| Pro-Switch | Single frequency | X-Terra Pro |
| BBS | Multi-frequency | Excalibur II |
| FBS 2 | Multi-frequency | CTX 3030 |
| GeoSense-PI | Pulse induction | GPX 6000 |
| MPF | Pulse induction | SDC 2300 |
| Multi-Au with Hybrid SMF-PI | Hybrid | Gold Monster 2000 |
| ZVT / GeoZVT | ZVT | GPZ 7000 (ZVT); GPZ 8000 (GeoZVT) |
| VFLEX, FBS, MPS | Earlier generations | X-Terra 305/505/705, E-TRAC, Explorer SE Pro, GPX 4500 and 5000 |
Multi-IQ and Multi-IQ+
Multi-IQ is Minelab's simultaneous multi-frequency platform, used across the Vanquish series, the X-Terra Elite and the Equinox 700 and 900. It processes multiple frequency data streams at once to deliver stable ground balance, reliable Target ID and consistent depth across a wide range of targets and ground conditions, from a mineralized farm field to a wet salt beach. The Manticore uses Multi-IQ+, the higher-powered version of the same idea.
Explore all Minelab detectors →
Pro-Switch
Pro-Switch is the selectable single-frequency system in the X-Terra Pro. Rather than transmitting several frequencies at once, it lets you pick 5, 8, 10 or 15 kHz to suit the target and the ground, with no coil change needed.
BBS (Broad Band Spectrum)
One of Minelab's earliest simultaneous multi-frequency systems, BBS transmits 17 frequencies at once. It is still highly regarded for beach and underwater hunting. The Excalibur II, which is waterproof to 200 ft (60 m), uses BBS to stay deep and stable in wet salt environments where single-frequency VLF detectors struggle. The discontinued Sovereign GT used it too.
FBS and FBS 2 (Full Band Spectrum)
FBS extends Minelab's multi-frequency approach across a wider range, from 1.5 kHz up to 100 kHz, providing far more target information per sweep. The result is high-resolution Target ID, excellent depth on all target types and reliable ground compensation in difficult soils. FBS 2, used in the CTX 3030, pairs it with the Smartfind 2 display, which plots ferrous and conductive properties on a two-dimensional screen and greatly improves target separation in iron-heavy sites.
- FBS: E-TRAC, Explorer SE Pro (both discontinued)
- FBS 2: CTX 3030
GeoSense-PI and MPF
These are Minelab's current pulse induction systems for gold. GeoSense-PI drives the GPX 6000, a largely automatic PI platform designed for lighter-weight, all-day prospecting. MPF (Multi Period Fast) is the technology in the compact, waterproof SDC 2300, where very fast switching between transmit and receive keeps it sensitive to small gold.
MPS (Multi Period Sensing)
MPS is the PI technology that made Minelab's name in gold prospecting. Rather than transmitting one kind of pulse, MPS mixes long and short pulses and samples the returning signal in different time windows. This separates genuine gold signals from the masking noise of iron-rich soils, the primary challenge facing gold prospectors in Australia, Africa and the American Southwest. Later GPX models added DVT (Dual Voltage Technology), which raises the voltage on the short pulses, and SETA (Smart Electronic Timing Alignment). MPS, DVT and SETA are the core of the earlier GPX 4500 and GPX 5000; the current GPX 6000 moved on to GeoSense-PI.
Multi-Au Technology with Hybrid SMF-PI
Multi-Au Technology with Hybrid SMF-PI is Minelab's hybrid detection engine, introduced in the Gold Monster 2000. It combines the sensitivity of a VLF-style machine with the ground handling of pulse induction in a single system.
In practice, this means the Gold Monster 2000 is built to find fine gold in mineralized soils where a standard VLF machine would false constantly. It bridges the gap between the two major detection technologies and is particularly aimed at small, shallow gold nuggets in iron-rich ground. For comparison, the Gold Monster 1000 is a 45 kHz VLF detector.
Browse hybrid SMF-PI metal detectors →
ZVT (Zero Voltage Transmission)
ZVT is Minelab's most advanced gold detection technology, used in the GPZ 7000. Instead of pulses, it creates ultra-constant, high-power magnetic fields, and Minelab credits it with up to 40% more depth than its pulse induction detectors. The GPZ 7000 pairs ZVT with a Super-D coil. The newer GPZ 8000, Minelab's current flagship, advances the platform with GeoZVT, a new family of Z-Set coils and four ground-type settings for more challenging terrain.
VFLEX (earlier X-Terra models)
VFLEX was Minelab's enhanced single-frequency VLF platform in the earlier X-Terra 305, 505 and 705. Every VFLEX coil contains a microcontroller that communicates with the detector at startup to ensure a matched, digitally controlled signal. Changing frequency meant swapping coils: 3 kHz for deep high-conductivity targets, 7.5 kHz for all-purpose hunting and 18.75 kHz for jewelry and small gold. If you own one of these detectors, the coil you choose sets the frequency.
Search Coil Technology
The search coil interacts directly with the ground and has as much impact on performance as the detector's technology itself. Coil size, shape and internal configuration all affect depth, sensitivity and target separation. For a full breakdown, see our dedicated Metal Detector Coil Guide.
Coil Size: Depth vs. Separation
Browse replacement and upgrade coils →
Coil Shapes
- Round coils: best overall depth and signal stability. Ideal for open fields, farmland and beaches.
- Elliptical coils: better maneuverability around roots, rocks and tight spaces, with good target separation.
- Open web (spider) coils: lighter than solid coils of the same size, and easier to sweep through shallow water because they push less water.
Coil Configurations
Concentric
The two windings sit one inside the other. They produce a cone-shaped detection field with excellent pinpointing accuracy, but are more susceptible to ground mineralization and EMI than Double-D designs.
Double-D (DD)
Overlapping transmit and receive windings create a narrow, blade-shaped detection field. This design is inherently more stable in mineralized soil and salt water, and it is standard on most mid-to-high-end detectors.
Monoloop
A single winding acts as both transmitter and receiver in alternating pulses. Used on PI detectors, monoloops give the deepest detection field but need careful ground balancing in mineralized soil. The coil of choice for many gold prospectors.
Ground Balance Technology
Almost all soil contains minerals, particularly iron oxides and salt, that produce their own electromagnetic response. Without ground balance, a detector would constantly respond to the ground itself and mask real targets. Ground balance lets the detector learn the soil's mineral signature and filter it out.
Manual Ground Balance
The user adjusts ground balance by hand until the detector is quiet over mineralized soil. This takes practice but gives expert hunters precise control. It suits gold prospectors and relic hunters working in difficult, variable ground where automatic systems may lag.
Automatic Ground Balance
The detector measures and sets ground balance for you when you pump the coil up and down over the soil. Fast and accurate for most conditions. Re-balance whenever you move to noticeably different ground.
Tracking Ground Balance
The detector continuously monitors and adjusts ground balance in real time as you sweep. Extremely useful in highly variable or layered soil where mineralization changes across the site. Many premium detectors offer all three modes so you can choose what suits the conditions.
Recovery Speed
Recovery speed refers to how quickly a detector can reset itself after detecting a target and be ready for the next one right beside it. This is one of the most important, and most overlooked, specifications for hunting in trashy environments.
A detector with slow recovery speed takes longer to process each signal. In a site littered with iron trash, a good target sitting close to a nail or bottle cap will often be masked, because the detector is still "recovering" from the trash signal when the good target passes under the coil.
A detector with fast recovery speed (called "reactivity" on some machines) resets almost instantly after each signal, making it far more effective in high-trash sites. Modern machines let you adjust it: the XP DEUS II has a reactivity setting from 0 to 5, and the Nokta Legend 2 has a recovery speed setting from 1 to 10. Run it faster in iron-heavy sites and slower, for more depth, in cleaner ground.
Wireless and Bluetooth Audio Technology
Modern detectors increasingly support wireless audio, eliminating the trailing cable between the detector and headphones. This matters for both comfort and waterproofing.
- Low-latency wireless headphones. Lag between the coil passing a target and the tone in your ears makes pinpointing harder, so manufacturers use low-latency links. Minelab's Equinox series and Manticore use what Minelab calls Low Latency Wireless Audio, with its ML 85 and ML 105 headphones.
- Bluetooth audio. More universal. The Nokta Legend 2 supports standard Bluetooth and aptX Low Latency, and ships with Nokta's own Bluetooth headphones.
- Fully wireless systems. The XP DEUS II takes wireless furthest: the coil, remote control and headphones are all linked by radio, with no cables anywhere on the detector. This makes the machine extremely lightweight.
Browse metal detecting headphones →
EMI (Electromagnetic Interference) Rejection
Metal detectors are sensitive instruments that can pick up interference from external electromagnetic sources: power lines, electric fences, cell towers, other nearby detectors and even some natural sources. This shows up as random chattering, false signals or general instability.
Modern detectors manage EMI in several ways:
Frequency shift / noise cancel
The detector scans nearby channels and selects the quietest one. On most machines this is a one-button operation labeled "Noise Cancel" or "Frequency Shift."
Switching frequency
On a machine with selectable frequencies, interference that swamps one frequency may barely touch another. Trying a different single frequency, or moving between single and multi-frequency, is often the quickest fix.
Manual sensitivity adjustment
Reducing sensitivity in high-EMI environments stabilizes the machine at the cost of some depth. Finding the highest stable sensitivity setting for your location is the standard approach.
Waterproofing and Submersibility
Not all waterproof claims are equal. Understanding the difference between weatherproof, submersible and dive-rated matters if you plan to hunt beaches, wade streams or dive.
- Weatherproof / splashproof. The control box can handle rain and splashing but should not be submerged, while the coil is usually fully submersible. Suitable for dry beach and field hunting in wet conditions.
- Submersible. The entire detector can be submerged to a stated depth. Suitable for wading, surf hunting and snorkeling.
- Dive-rated. Designed for deeper submersion, with sealed electronics and headphones rated for diving depths.
Manufacturer depth ratings for some popular waterproof detectors:
| Detector | Rated depth | Good to know |
|---|---|---|
| Garrett AT Pro | 10 ft (3 m) | The standard headphones are not waterproof |
| Minelab CTX 3030 | 10 ft (3 m) | |
| Minelab Equinox 700 / 900 | 16 ft (5 m) | IP68 |
| Minelab Manticore | 16 ft (5 m) | IP68 |
| Nokta Legend 2 | 16 ft (5 m) | IP68; the included headphones are not waterproof |
| Garrett Vortex series | 16 ft (5 m) | |
| XP DEUS II | 66 ft (20 m) | Underwater use needs the RC remote with its red diving cap, the antenna from the RC kit and the BH-01 headset |
| Minelab Excalibur II | 200 ft (60 m) | Purpose-built dive detector |
Always check which parts of the kit the rating covers. Wireless headphones in particular are often rainproof at best, even when the detector itself can go under. For picks by depth, see our best underwater metal detectors guide, or browse waterproof metal detectors.
Battery and Power Technology
Battery life and charging method directly affect usability in the field, especially on all-day hunts far from a power source.
- Built-in rechargeable lithium battery. Standard on most current mid-to-high-end machines, including the Garrett ACE Apex and Axiom, the Nokta Legend 2 and the Minelab Equinox and Manticore. Lighter than AA packs with consistent power delivery. Runtime depends heavily on settings: Nokta, for example, quotes 8 to 20 hours for the Legend 2. The downside is that if the battery dies in the field, you cannot swap in fresh AAs.
- AA battery operation. Common on entry-level and some mid-range machines, such as the Garrett ACE 400, AT Pro and AT Max, which run on four AAs. Convenient because you can carry spares on long hunts.
Firmware and Software Updateability
A relatively new but increasingly important consideration: can your detector be updated after purchase? Many modern machines receive firmware updates that improve performance, add new search modes, fix bugs or expand frequency options.
- The XP DEUS II has received multiple major software versions since launch, installed over USB, adding new features and refining target ID.
- The Nokta Legend 2 can be updated by cable or wirelessly from a phone or laptop. See our Nokta firmware updates page for the current files.
A detector that gets firmware updates effectively becomes a better machine over its lifetime, which is an important long-term value consideration.
Target Identification and Discrimination
Finding metal is only half the job. The other half is knowing whether to dig it. Discrimination systems help you reject trash and focus on keepers.
How Target ID Works
Every metal produces a characteristic phase shift when exposed to an electromagnetic field, determined by its conductivity and ferrous content. The detector converts this phase shift into a numerical Target ID (TID), typically 0 to 99, displayed on screen. High numbers indicate high-conductivity, non-ferrous metals like silver and copper. Low numbers indicate iron. Gold jewelry typically falls in the low-to-mid range, which overlaps with some common trash, making gold the hardest category to discriminate perfectly.
TID accuracy is affected by target depth, soil conditions, target orientation and detector quality. Experienced detectorists learn to weigh several factors together (TID value, signal repeatability, audio tone and signal shape) rather than relying on TID alone.
Discrimination Methods
| Method | What it does |
|---|---|
| Variable (threshold) discrimination | Rejects all targets below a chosen TID value. Simple and effective for blocking iron, but risks rejecting low-conductivity good targets like gold rings. |
| Notch discrimination | Accepts or rejects specific TID windows. You can block the pull-tab range while still accepting rings that fall outside it. More nuanced, and it requires knowing your target's expected TID range. |
| 2D discrimination (Minelab Smartfind 2) | Displays both conductivity and ferrous content on a two-dimensional grid. Separates targets that share a conductivity reading but differ in ferrous character, which improves accuracy in iron-heavy sites. |
| Iron Audio (Garrett) | Lets you hear discriminated iron that would normally be silent. Useful for recognizing flat iron such as bottle caps before you dig, and for judging what is under the coil in iron-heavy ground. |
Sensitivity
Sensitivity controls how strongly the detector amplifies incoming signals from the ground. Higher sensitivity means deeper detection and better response to faint targets, but also more susceptibility to ground mineralization, EMI and false signals.
The goal is always to run at the highest stable sensitivity for your specific ground conditions. If the detector is chattering or producing random signals, reduce sensitivity until it stabilizes. A calm, stable detector at 85% sensitivity will find more targets in practice than an erratic machine running at 100%, because you can actually trust the signals you hear.
Which Technology Is Right for You?
Start with where you hunt and what you want to find. The technology follows from that.
Not sure where to start?
You can also visit our Getting Started Guide, explore the Resource Library, or get in touch. We are detectorists and happy to help you find the right machine.
Related Reading
- Metal Detector Coil Guide: sizes, shapes and configurations in depth
- How Deep Do Metal Detectors Go?
- Metal Detecting Terminology: every acronym on this page, defined
- Where to Go Metal Detecting
- Metal Detecting FAQ & Tips
- Gold Panning Guide
Shop at Serious Detecting
Authorized U.S. dealer, free shipping on most orders over $99. Or call (844) 771-0707 to talk through which technology fits your ground.
Jump to a technology: VLF · Multi-Frequency · Pulse Induction · Hybrid SMF-PI · Gold · Waterproof · Coils · Pinpointers
Metal Detector Technologies at a Glance
Swipe or scroll sideways to see every technology.
| Single-Frequency VLF | Multi-Frequency (SMF) | Pulse Induction (PI) | Hybrid SMF-PI | ZVT | |
| Signal | Continuous wave at one frequency | Several frequencies transmitted at once | Rapid high-power pulses, then signal decay is measured | Multi-frequency sensitivity with PI-style ground handling | Ultra-constant, high-power magnetic fields |
| Target ID | Strong Target ID and discrimination | Strong, and stable in difficult ground | Limited; basic iron indication at best | Built around finding gold | Built around finding gold |
| Mineralized ground and salt | Struggles in heavy mineralization and wet salt sand | Stays stable from dry sand to wet salt sand | Excels in mineralized soil and salt water | Made for mineralized gold ground | Made for the most mineralized gold ground |
| Best for | Coins, jewelry and relics in mild ground; specialist high-frequency gold machines | One detector for parks, fields and beaches | Gold prospecting, salt beaches and maximum depth on large targets | Small gold in iron-rich soil | Deep gold nuggets |
| Examples | Minelab X-Terra Pro, Gold Monster 1000 | Minelab Equinox 900, XP DEUS II, Nokta Legend 2 | Minelab GPX 6000, Garrett Axiom, Minelab SDC 2300 | Minelab Gold Monster 2000 | Minelab GPZ 7000, GPZ 8000 |
About the Author
Evan K is a detectorist who hunts Great Lakes swim beaches, rivers and surf, and writes detector buying guides for Serious Detecting, an authorized dealer for Minelab, XP, Nokta, Garrett and Fisher. The team answers the phone at (844) 771-0707 and would rather talk you into the right detector than sell you the wrong one.