Fisher Gold Bug Pro Metal Detector

The Fisher Gold Bug Pro is the 19 kHz gold-and-relic detector for prospectors who want real-time control over hot, mineralized ground. It takes the proven Gold Bug platform and adds a Ground Phase readout that shows the actual soil-mineralization number on the display, so you can fine-tune manual ground balance as conditions shift from decomposed granite to red clay. Most hunters buy it as a dual-coil combo — a 5″ coil for bedrock crevices and a 10″ coil for covering washes and fields. It's part of the wider Fisher Gold Bug family; as an authorized Fisher dealer, every Gold Bug Pro ships genuine with Fisher's 2-year warranty, and most orders over $99 ship free in the lower 48.

Quick Links: Buy the Gold Bug Pro | Gold Bug Family | Gold Bug 2 | Gold Detectors | Fisher Pinpointers | All Metal Detectors

What the Gold Bug Pro Adds Over the Standard Gold Bug

Both the standard Gold Bug and the Gold Bug Pro run the same 19 kHz frequency and computerized Ground Grab balancing, so they find the same small gold. The Pro's advantage is information: its continuous ground condition readout shows the Ground Phase value and an Fe3O4 mineralization graphic in real time, so you can see exactly how hot the ground is and fine-tune manual ground balance for it — a real edge in variable, heavily mineralized soil where the ground changes from one swing to the next. Add the V-Break variable breakpoint tone discrimination system, which lets you notch out iron while keeping mid-conductors like brass and lead in the accept zone, and the Pro becomes a precise tool for both nugget shooting and relic hunting on trashy ground.

Gold Bug Pro Specs & Features

  • Operating frequency: 19 kHz (single-frequency VLF)
  • Weight: ~2.5 lbs (low-fatigue, well balanced)
  • Ground balance: Ground Grab® computerized, real-time, with manual fine-tune
  • Ground readouts: continuous Ground Phase value + Fe3O4 mineralization graphic
  • Discrimination: V-Break variable breakpoint tone system
  • Audio: VCO in All Metal and Discrimination modes; dual headphone jacks
  • Target ID: 1–99 numeric on a large LCD
  • Pinpoint: static, with depth indicator
  • Power: 9V battery
  • Warranty: 2 years (current Fisher warranty term)

The Dual-Coil Combo: 5″ for Crevices, 10″ for Coverage

The Gold Bug Pro combo ships with two coils so one detector handles two very different jobs. The small 5″ biaxial coil has a tight footprint that reduces ground noise in the hottest soil and slips into bedrock cracks and tight spaces between boulders where small nuggets hide. The 10″ elliptical coil covers ground quickly across open washes, tailings, and farm fields, and adds depth on larger relics and coins. Switching between them turns the Pro from a specialist crevice machine into a general-purpose prospecting and relic detector — which is exactly why the combo is the most popular way to buy it.

Coils & Accessories for the Gold Bug Pro

Need a spare or replacement coil? The 10″ biaxial DD coil fits the Gold Bug Pro (as well as the Gold Bug and Fisher F5) and gives you depth and ground coverage in a single coil. And the Fisher Gold Bug Pro digital manual is a free download, so you can study the ground-balance and discrimination controls before your first hunt. Comparing the Pro against the rest of the family or other gold machines? See the Gold Bug family and our full gold detectors collection.

Fisher Gold Bug Pro FAQs

What's the difference between the Gold Bug and the Gold Bug Pro?

Both run 19 kHz and find the same small gold. The Gold Bug Pro adds a Ground Phase readout and Fe3O4 mineralization graphic that show the actual soil conditions in real time, giving you more precise manual ground balance on hot or variable ground, and it's commonly sold as a dual-coil combo. The base Gold Bug is simpler and a touch more affordable.

How does the Gold Bug Pro compare to the Gold Bug 2?

Frequency and focus. The Gold Bug Pro runs 19 kHz, balancing gold sensitivity with versatility for relics and coins. The Gold Bug 2 runs 71 kHz for extreme sensitivity to the tiniest nuggets, but is a more specialized prospecting machine. Choose the Pro for an all-around gold-and-relic detector with ground-phase control; the Gold Bug 2 for maximum micro-gold sensitivity.

Is the Gold Bug Pro good for relic and coin hunting too?

Yes. While it's a dedicated gold-prospecting machine, its 19 kHz sensitivity to small, low-conductivity targets and its V-Break discrimination make it a strong relic detector for brass, lead, and bullets on iron-heavy sites, and it shoots coins well. The 10-inch coil in the combo adds the depth and coverage that coin and relic hunting reward.

Is the Gold Bug Pro good for beginners?

Yes — it has an ultra-simple interface with just the key controls and a one-button Ground Grab balance, so a new prospector can be hunting in minutes, while the ground-phase readout and manual fine-tune give experienced users room to optimize. It's a common first serious gold detector.

Is the Gold Bug Pro waterproof?

The search coils are waterproof for working creek edges and shallow water, but the control housing is not submersible, so keep it above the waterline. It's a land-and-edge prospecting machine, not an underwater detector.

What comes in the Gold Bug Pro combo?

The combo includes the Gold Bug Pro detector, a 5-inch biaxial search coil, a 10-inch elliptical search coil, batteries, and Fisher's 2-year warranty — everything you need to hunt both tight bedrock and open ground out of the box.

Why Buy Your Gold Bug Pro from Serious Detecting

We're an authorized Fisher Research Labs dealer, so your Gold Bug Pro ships with the complete factory package and the full 2-year Fisher warranty. Our team runs the Gold Bug and Gold Bug Pro in the field, so when you call with a ground-balance or coil question, you reach someone who's hunted the kind of ground you're working. Orders over $99 ship free in the lower 48, local pickup is available out of Michigan, and over 2,700 verified buyers have rated us 4.9 stars. Not sure whether the Gold Bug, the Pro, or the Gold Bug 2 fits your prospecting? Tell us where you hunt and how small the gold runs, and we'll match it.

Customer Questions & Expert Answers

Get real answers from outdoor explorers and our product experts. Browse questions about performance, features, and setup —or ask your own to make sure this gear fits your next adventure.

What makes the Fisher Gold Bug Pro better than the regular Gold Bug for gold prospecting?

The Gold Bug Pro offers significantly more advanced features including manual and automatic Ground Grab® balancing, Fe3O4 mineralization readout, and multi-tone target ID that helps distinguish between different types of targets. While the regular Fisher Gold Bug is simpler with turn-on-and-go operation, the Pro model gives experienced prospectors much more control and information for challenging mineralized ground conditions.

Answered by Richard T. · February 2026

Can the Fisher Gold Bug Pro detect small gold nuggets and fine gold?

Yes, the Gold Bug Pro excels at finding small gold nuggets and fine targets thanks to its high-frequency 19 kHz VLF platform designed specifically for gold sensitivity. Its professional-grade circuitry is engineered to detect even tiny pieces of gold that lower-frequency detectors often miss, making it a top choice among serious gold prospecting detectors.

Answered by Dan P. · February 2026

How does the Ground Grab balancing work on the Fisher Gold Bug Pro?

The Ground Grab® system allows you to automatically balance the detector to your specific soil conditions by simply pumping the coil and pressing a button, or you can fine-tune it manually for maximum performance. This feature is crucial when hunting in highly mineralized soils common in old mining areas, as it eliminates false signals from ground minerals so you only hear actual targets. The Fe3O4 mineralization readout also shows you exactly how mineralized your hunting ground is.

Answered by John W. · February 2026

What search coils are available for the Fisher Gold Bug Pro?

The Gold Bug Pro is compatible with various Fisher coils designed for different hunting conditions and target sizes. You can browse Gold Bug Pro compatible coils to find options ranging from smaller coils for tight spaces and better sensitivity to larger coils for increased depth and ground coverage in open areas.

Answered by Richard T. · February 2026

Is the Fisher Gold Bug Pro suitable for beginners or is it too advanced?

While the Gold Bug Pro offers professional-grade features, it's designed to be easy to master with intuitive controls that beginners can learn quickly. The automatic Ground Grab balancing makes setup simple, but having manual control options means you can grow into the detector's advanced capabilities as your skills improve. For those wanting something even simpler, consider browsing our beginner detectors or contact Serious Detecting for personalized recommendations based on your experience level.

Answered by Dan P. · February 2026

Is the Fisher Gold Bug Pro good for beginners?

The Fisher Gold Bug Pro is a capable machine that rewards prospectors who learn manual ground balance management. It is not the easiest machine for complete beginners - the manual tuning requires understanding mineralization conditions and how to adjust for them. For a first gold VLF machine, the Minelab Gold Monster 1000 is more accessible: fully automatic ground balance, simpler controls, and immediate productive results without needing to master manual tuning. Move to the Gold Bug Pro once you understand ground conditions well enough to use its manual controls to advantage. See Gold Monster 1000.

Answered by Dan P. · April 2026

How does the Fisher Gold Bug Pro compare to the Minelab GPX 6000?

These machines are in fundamentally different categories. The Gold Bug Pro is a high-frequency VLF machine - effective in moderate goldfield mineralization, light in weight, and significantly less expensive. The Minelab GPX 6000 is pulse induction - essentially immune to ground mineralization, reaching targets the Gold Bug Pro cannot in highly mineralized conditions, at a price that is many times higher. The Gold Bug Pro is the right VLF starting point for most prospectors. The GPX 6000 is the upgrade for prospectors who have found highly productive ground that defeats VLF performance. See Minelab GPX 6000.

Answered by Richard T. · April 2026

Where can I buy Fisher Gold Bug Pro and Gold Bug 2 with a US warranty?

As an authorized Fisher Labs dealer, every machine we sell includes full manufacturer warranty and US-based support. Fisher warranties require purchase from an authorized dealer - third-party resellers on marketplaces may offer no warranty coverage on the same machines. The Gold Bug Pro and Gold Bug 2 are both in stock with free US shipping. If you have questions about which Gold Bug model is right for your prospecting goals, our team can help you choose before purchase.

Answered by Dan P. · April 2026