Why 71 kHz: The Most Sensitive Gold Detector Fisher Makes
Frequency is everything in gold detecting. Sub-grain gold produces a tiny eddy current, and the higher a detector's frequency, the more strongly its field couples with those small, low-conductivity targets. At 71 kHz the Gold Bug 2 is tuned about as far toward small-gold sensitivity as a VLF goes: it detects flour gold and picker-sized nuggets in decomposed granite and ironstone that 19 kHz machines miss entirely. That sensitivity is a deliberate tradeoff: the Gold Bug 2 is a dedicated nugget shooter, not a do-everything coin and relic detector, and it gives up some depth on large, high-conductivity targets to gain its edge on the small stuff. If you're working heavily detected ground where the big nuggets are gone, the Gold Bug 2 finds what's left.
Choosing Your Coil: 6.5″ or 10″
The Gold Bug 2 comes with your choice of coil, and the right one depends on your ground. The Gold Bug 2 with the 6.5″ elliptical coil has the tightest footprint and the most sensitivity to the smallest gold, and it slips into bedrock cracks and tight spots between boulders (the patch-hunter's coil). The Gold Bug 2 with the 10″ elliptical coil covers more ground per sweep and reaches a little deeper, making it the better all-around choice for working washes and open placers. Many prospectors eventually run both; when the combo of the two is in stock it bundles them together, and you can always add the second coil later.
Gold Bug 2 vs Gold Bug Pro: Which Gold Machine?
This is the choice most gold buyers weigh. The Gold Bug Pro runs 19 kHz with computerized Ground Grab balancing, and it's more versatile (gold, relics, and coins), easier to learn, and a strong all-rounder. The Gold Bug 2 runs 71 kHz with manual dual-control ground balance, and it's a focused micro-gold specialist with more sensitivity to the tiniest nuggets, but a steeper learning curve and less versatility outside prospecting. Choose the Pro if you want one detector for gold and general hunting; choose the Gold Bug 2 if your priority is squeezing the smallest gold out of hot, hunted ground. Comparing the whole lineup? See the Gold Bug family and our full gold detectors collection.
Gold Bug 2 Specs & Features
- Operating frequency: 71 kHz (single-frequency VLF)
- Ground balance: high-precision dual-control manual
- Discrimination: Iron Disc mode (iron & hot-rock rejection)
- Audio: deep-target audio boost for faint, deep signals
- Coils: 6.5″ and 10″ elliptical (choose your config)
- Build: lightweight and hip-mountable to cut arm fatigue on long hunts
- Best for: gold-nugget prospecting in mineralized, hot-rock ground
- Warranty: 2 years (current Fisher warranty term)
Coils & Accessories for the Gold Bug 2
Round out your Gold Bug 2 with a replacement armrest assembly for all-day comfort. New to manual ground balancing? The Fisher Gold Bug 2 digital manual is a free download and walks through the dual-control setup that makes this machine work in hot soil.
Why Buy Your Gold Bug 2 from Serious Detecting
We're an authorized Fisher Research Labs dealer, so your Gold Bug 2 ships with the complete factory package and the full 2-year Fisher warranty. Our team has prospected with the Gold Bug 2 in real gold country, so when you call with a dual-control ground-balance question on your first trip, you reach someone who's tuned this machine in the kind of soil you're hunting. Orders of $99 or more ship free in the lower 48, local pickup is available out of Michigan, and thousands of verified buyers have rated us 4.9 stars. Not sure whether the Gold Bug 2, the Pro, or the standard Gold Bug fits your prospecting? Tell us where you hunt and how small the gold runs, and we'll match it.
