Garrett Goldmaster 24k Metal Detector with Dual Waterproof Coils

The Garrett Goldmaster 24k is a high-frequency VLF metal detector built for prospectors who chase fine gold in mineralized terrain. Running at a single operating frequency that resolves sub-grain flakes and shallow pickers a general-purpose detector walks over, it pairs that sensitivity with XGB Auto Tracking ground balance that re-zeros sweep by sweep when soil chemistry shifts under the coil. Two waterproof search coils ship in the box, a 6" x 10" DD elliptical for ground coverage on hot ground and a 6" round concentric for tight target separation in patches and trash. Detectorists stepping up from slower machines feel the difference immediately on the smallest signals.

What's Included with the Garrett Goldmaster 24k

• Goldmaster 24k control housing
• 6" x 10" Elliptical DD waterproof search coil
• 6" Round Concentric waterproof search coil
• Garrett ClearSound Easy Stow headphones with volume control
• 8 AA rechargeable batteries
• AA recharging kit with universal adaptors
• 12V charger cables for car or battery
• 3-year Garrett manufacturer warranty

High-Frequency Gold Recovery in Mineralized Ground

The operating frequency is what makes the Goldmaster 24k a small-gold machine. Higher frequency means the magnetic field flips faster, so the smallest conductors produce a usable signal instead of vanishing in noise. Flake gold, sub-grain pickers, and fine wire all become detectable targets. Mineralization gets louder at higher frequencies too, which is where XGB Auto Tracking earns its place. Instead of one ground balance setting locked at startup, XGB samples ground response continuously and adjusts on the fly. Walk from quartz vein to red clay to basalt scree, and the threshold stays smooth. Two refinements help in real ground: Traclock pins the current ground balance value when you find a productive patch and want to pump the same setting across it, while Frequency Shift moves the operating channel slightly to step away from EMI when power lines or other detectorists are nearby. Ground-Sync gives a one-button reset on the rare occasion you need to start fresh. For more on what the ground is doing under your coil, read our guide to metal detector technologies.

Desert Wash and Dry Placer Ground

Wash terrain hides gold under iron-laced rocks and mineralized clay, where threshold drift drowns out small targets. The high-frequency signal recovers fine gold the bigger machines miss, and XGB Auto Tracking keeps the audio quiet over basalt fragments and red dirt that lock up slower detectors. We run the 6" x 10" DD elliptical coil in VCO Zip mode with sensitivity at 7 to 8, iron cancel at 35 to 40, and Auto Tracking engaged. Once you find a clean patch, Traclock holds the ground balance steady.

Patch Hunting in Oxidized Soil

Once the obvious is cleared, the hot patch keeps producing for the prospector who can hear the smallest signal. Switch to the 6" concentric for tight target separation between small nuggets and ferrous fragments. The narrow footprint isolates targets the elliptical DD bundles together. We run 2-tone Beep mode with sensitivity at 8 to 9 and a lower iron cancel setting around 30 to keep borderline signals audible.

Wet Creek Edges and Shallow Water

Both stock coils are submersible, and the rainproof control housing handles drizzle and splash. We do not push the housing under, but creek-edge work, wet bedrock cracks, and dewy morning grass pose no issue for this detector. Run the DD elliptical in VCO Zip mode with sensitivity at 6 to 7. Tap Frequency Shift to a new channel if EMI is rising from storm static or nearby electronics. Prospectors who work wet environments regularly will appreciate the waterproof coil construction on both included search coils.

Dual-Coil Advantage for Prospecting Flexibility

• Two coils in the box cover the major prospecting situations without a second purchase: the 6" x 10" Elliptical DD is the workhorse for ground coverage on open washes and benches, while the 6" Round Concentric is the precision tool for tight target separation in trashy patches.
• DD geometry handles mineralization better than concentric in highly hot ground, so the elliptical coil runs 80% of a typical day. Reach for the concentric after the DD has narrowed in on a productive zone and signals are starting to stack on each other.
• Both coils are waterproof and swap quickly via the cam-lock stem connector, so you can adapt to changing ground conditions mid-hunt without returning to the vehicle.
• The 60 square-inch footprint of the elliptical DD covers ground fast, while the concentric's tighter detection cone produces crisper target separation when you need to isolate small nuggets from ferrous fragments.
• Coil selection pairs with the two audio modes for maximum flexibility: 2-tone Beep for fast iron-versus-non-iron calls, and VCO Zip for proportional response that maps signal strength to pitch and volume.

Compare within the family

The Goldmaster 24k lineup offers a single-coil configuration alongside this dual-coil bundle. Here's how they stack up for prospectors choosing between coverage and precision out of the box.

Control Layout, Display, and Audio Routing

The GM24k runs on 8 AA cells with the included rechargeable AA pack and charging cables, so a long weekend in the desert does not need a wall outlet. The backlit display reads in low light and predawn starts. The control set is direct: sensitivity 0 to 10, adjustable iron cancel, ground balance modes, frequency shift, audio mode toggle, and threshold trim. No menu trees, no submenus to wade through with cold hands. Audio routes through the included Garrett ClearSound Easy Stow headphones with volume control over a wired connection. The 2-tone Beep mode separates iron from non-iron at speed, while the VCO Zip mode rises in both pitch and volume with target strength, which our team uses to read depth and size by ear. Pair the detector with a Garrett Pro-Pointer AT pinpointer to recover the smallest signals from the side of a hole without enlarging it. Prospectors looking to expand their garrett goldmaster 24k gold metal detector setup will find compatible accessories and coils in our catalog.

XGB Auto Tracking and Frequency Management

XGB Auto Tracking is the ground balance system that makes high-frequency prospecting practical in variable terrain. Instead of manually pumping the coil to lock a ground balance setting at the start of a hunt, XGB samples ground response continuously and adjusts on the fly. This is critical when working washes, benches, and patches where soil chemistry shifts every few feet. Red clay transitions to quartz vein, then to basalt scree, and the threshold holds steady without constant rebalancing. Traclock is the companion feature: when you find a productive patch and want to work it systematically, Traclock pins the current ground balance value so you can pump the same setting across the zone. Frequency Shift addresses EMI from power lines, other detectorists, or thunderstorm static. Tap the button to move the operating channel slightly, and the threshold quiets. Ground-Sync provides a one-button reset on the rare occasion you need to start fresh after a major terrain change. These three refinements turn a high-frequency detector into a practical field tool for long days in variable ground. Detectorists interested in how ground balance systems work across detector types can explore our very low frequency (vlf) metal detectors collection for comparison.

Field Ergonomics and Battery Runtime

The Goldmaster 24k's adjustable shaft collapses for transport and extends to fit detectorists from five feet to over six feet tall. The arm cuff and strap distribute weight across the forearm, so wrist fatigue stays low on long hunts. The control housing sits at hip level with the backlit display angled for easy viewing without breaking stride. The included rechargeable AA pack provides runtime for a full day of prospecting, and the charging kit includes universal plug adapters plus a vehicle charging cable for remote camps. The rainproof control housing handles drizzle, splash, and dewy morning grass, though we do not submerge it. Both search coils are fully submersible, so creek-edge work and wet bedrock cracks are within scope. The cam-lock stem connector lets you swap coils in seconds without tools, a practical feature when ground conditions shift mid-hunt and you need to switch from the elliptical DD to the concentric for tighter target separation.

Target Separation and Iron Discrimination

Adjustable iron cancel is the feature that quiets hot rocks and ferrous trash without crushing depth on small gold. The control runs from 0 to 99, and we typically set it between 30 and 40 for desert wash prospecting. Lower settings keep borderline signals audible, which matters when a small nugget and a ferrous fragment are close together. Higher settings reject more iron but can also reject low-conductor gold in the same range. The 6" concentric coil produces a tighter detection cone than the elliptical DD, which improves target separation in trashy patches where signals stack on each other. When the DD gives a broad signal that could be one target or three, switch to the concentric and re-sweep. The narrower footprint isolates individual targets, and the 2-tone Beep mode gives a fast iron-versus-non-iron call so you can decide on the spot. VCO Zip mode provides proportional audio response: louder and higher-pitched signals typically mean shallower or larger targets, while softer and lower-pitched signals suggest deeper or smaller ones. Our team uses VCO Zip for initial sweeps and switches to 2-tone Beep when iron trash density rises.

Specifications

• Operating Frequency: 48 kHz VLF
• Search Coil 1: 6" x 10" Elliptical DD, waterproof
• Search Coil 2: 6" Round Concentric, waterproof
• Ground Balance: XGB Auto Tracking, with Ground-Sync and Traclock
• Audio Modes: 2 (2-tone Beep, VCO Zip)
• Sensitivity: 0 to 10 adjustable
• Threshold: Variable self-adjusting
• Iron Cancel: Adjustable for hot rocks and ferrous trash
• Battery: 8 AA rechargeable (included)
• Display: Backlit LCD
• Audio Output: 1/4" wired connection
• Warranty: 3-year manufacturer parts and labor

Why Buy from Serious Detecting

We are an authorized Garrett dealer, so every Goldmaster 24k ships with the full 3-year manufacturer warranty. Our team runs Garrett detectors in the field, and we stock the coils, batteries, and accessories prospectors need when a component wears out or a hunt plan changes. Free shipping, 30-day returns, and price-match guarantee cover the transaction. When you call with a ground balance question or a coil-selection decision, you reach detectorists who have worked the same terrain.