Minelab GPZ 8000 Gold Detector Overview
The Minelab GPZ 8000 is a GPZ gold detector built on GeoZVT, which Minelab describes as proven ZVT depth with advanced signal control for mineralized, conductive and EMI-heavy ground. It ships with the Z18 18 inch concentric toroidal coil and offers four ground types: Difficult High Yield, Difficult Deep, Normal Deep and Normal Extra Deep, with Difficult Deep as the factory setting. Sensitivity runs manual 1 to 10 plus Auto and Auto+, Noise Cancel works automatically across 4096 channels or manually across 128, and ground balance combines automatic tracking with the Quick-Trak button. Audio is continuous with no target ID number, delivered through Echo Sonic Pro stereo audio or mono. Minelab rates the detector, the coil and the WM 14 wireless module waterproof to 1 m (3.3 ft) for up to 30 minutes. The GPZ 8000 weighs 2.78 kg (6.1 lb) with the Z18 and runs on two removable 7.2 V / 5833 mAh lithium-ion packs, each rated about 10 hours. The box adds Minelab Audiophile wired headphones (Sennheiser HD 505), the PRO-SWING 125 harness, the GA 10 guide arm and USB-C chargers, and Minelab covers the control box and coil for 3 years.
GPZ 8000 vs GPZ 7000: Which Should You Buy?
For a first GPZ, we recommend the GPZ 8000. Compared with the GPZ 7000 it is lighter (2.78 kg or 6.1 lb, against 3.32 kg or 7.32 lb), the whole detector can go into shallow water instead of only the coil, a second battery comes in the box, and there are three Z-Set coils to match the ground.
The GPZ 7000 is the choice for prospectors who want built-in GPS mapping, which the GPZ 8000's specifications do not list, or who already own GPZ 14 or GPZ 19 Super-D coils. Those coils do not fit the GPZ 8000, so a move from a GPZ 7000 means new coils as well as a new detector.
GPZ 8000, Best For:
- Experienced prospectors working mineralized, conductive or EMI-heavy goldfields
- Wet washes and shallow creeks, within the 1 m, up to 30 minute rating
- Full days in the field with two batteries and a hip-supported harness
- Prospectors who want separate coils for open ground, noisy ground and brush
GPZ 7000, Best For:
- Prospectors who log FindPoints and GeoHunt tracks with built-in GPS
- Owners who already run GPZ 14 or GPZ 19 Super-D coils
- Owners keeping an existing GPZ 7000 running with coils, batteries and parts
Key Features That Matter in the Field
The four ground types do the heavy lifting. Minelab's instruction manual matches the Difficult ground types to ground with high mineralization, iron and variability, and the Normal ground types to more uniform ground with low mineralization, where Normal Deep and Normal Extra Deep push for depth. We recommend not leaving Normal Extra Deep on everywhere, because a depth setting meant for mild ground can turn unstable in severe mineralization. Echo Sonic Pro plays different ground information in each ear, which Minelab says helps you pick the right ground type. It is designed for true stereo headphones with a flat frequency response, which is why Minelab packs audiophile wired headphones for the 3.5 mm socket. The WM 14 module has a built-in speaker and an internal battery rated about 8 hours, charged over USB-C. Auto and Auto+ sensitivity let the detector set its own level as the ground changes; manual 1 to 10 is there when you want control. Hold Quick-Trak while raising and lowering the coil to balance to new ground. An integrated dual-LED flashlight with three brightness levels helps when you are packing up after dark.
Where the GPZ 8000 Works Best, and Its Limits
The GPZ 8000 fits experienced prospectors working hard ground: iron-rich soils, conductive ground and spots near power lines or other interference, which is where Minelab designed GeoZVT and the Z17 to perform. The waterproof control box lets you follow a gold-bearing gully into shallow water, but it is not a diving detector, and the HD 505 headphones are not waterproof. At 2.78 kg it is lighter than the GPZ 7000 yet still a substantial machine, so we recommend wearing the PRO-SWING 125 for any long session. There is no target ID number and no GPS in Minelab's specifications. For someone new to natural gold, the Minelab GOLD MONSTER 2000 is a lighter, simpler start, and the Minelab GPX 6000 is Minelab's GeoSense-PI gold detector at 2.1 kg (4.6 lb).
Coils and Accessories That Fit the GPZ 8000
The GPZ 8000 uses Minelab's Z-Set concentric toroidal coils only. The Z18 18 inch coil comes in the Single Coil Pack; Minelab designed it for maximum depth and stability in highly mineralized ground and for covering wide open areas. The Z17 17 inch is designed for high EMI and conductive soils, with stable operation on small to medium gold. The Z13 13 inch suits vegetation-heavy terrain, with balanced handling over long sessions. The Three Coil Pack holds all three. GPZ 8000 coils do not fit the GPZ 7000, and GPZ 7000 Super-D coils do not fit the GPZ 8000. We recommend choosing the coil by terrain: the largest coil is not automatically the best one in rocks or brush.
Minelab coils always come with a coil cover; replacement skidplates are here for the Z18, Z17 and Z13. The GPZ 8000 collection also carries the GPZ 8000 7.2 V / 5833 mAh battery pack, the PRO-SWING 125 harness, the WM 14 wireless audio module, the Sennheiser HD 505 headphones and their replacement cable.
GPZ Series Comparison
Both GPZ models are ZVT-family gold detectors with continuous audio, automatic ground tracking, Quick-Trak and a 3-year warranty on the control box and coil. The differences sit in the detection platform, coil family, waterproofing, weight, batteries, GPS and what comes in the box.
| Feature | Minelab GPZ 7000 | Minelab GPZ 8000 |
|---|
| Detection Technology | ZVT (Zero Voltage Transmission) | GeoZVT |
| Search Modes | Gold Modes: High Yield / General / Extra Deep; Ground Types: Normal / Difficult / Severe | Ground Types: Difficult High Yield / Difficult Deep / Normal Deep / Normal Extra Deep |
| Sensitivity | 1 to 20 | Manual 1 to 10, Auto, Auto+ |
| Ground Balance | Automatic tracking or manual, Quick-Trak | Automatic tracking or manual, Quick-Trak |
| Noise Cancel | Auto or manual, 256 channels | Auto (4096 channels) or manual (128 channels) |
| Target Audio | Continuous tones, no target ID number | Continuous tones with Echo Sonic Pro stereo audio, no target ID number |
| Included Coil(s) | GPZ 14 14 inch round Super-D | Z18 18 inch concentric toroidal (Three Coil Pack adds Z17 17 inch and Z13 13 inch) |
| Coil Family (not interchangeable) | Super-D: GPZ 14, GPZ 19 | Z-Set concentric toroidal: Z13, Z17, Z18 |
| Waterproof Rating | Coil to 1 m (3.3 ft); control box weatherproof only | Detector, coil and WM 14 to 1 m (3.3 ft) for up to 30 minutes |
| Weight (with coil) | 3.32 kg (7.32 lb) with GPZ 14 and battery | 2.78 kg (6.1 lb) with Z18 |
| Battery | One removable 7.2 V / 72 Wh Li-ion pack | Two removable 7.2 V / 5833 mAh Li-ion packs, about 10 hr each |
| Wireless Audio | WM 12 module (Wi-Stream) in the box | WM 14 low-latency module in the box |
| Headphones in Box | KOSS UR-30 wired, 6.35 mm (1/4 inch) plug | Minelab Audiophile wired (Sennheiser HD 505), 3.5 mm plug |
| GPS | Built-in GPS, XChange 2 PC mapping | Not listed in Minelab's specifications |
| Harness | PRO-SWING 45 | PRO-SWING 125 with hip struts |
| Warranty | 3 Years, control box and coil | 3 Years, control box and coil |
Read our GPZ 7000 vs GPZ 8000 comparison for a closer look at how the two GPZ models differ, and our Minelab GPZ 8000 review for more on the detector.
Why Buy the Minelab GPZ 8000 from Serious Detecting?
- Free Shipping on Orders Over $99: Your Minelab GPZ 8000 ships at no extra cost across the continental US.
- Authorized Minelab Dealer: Showroom in Ypsilanti, Michigan, full 3-year manufacturer warranty and product registration support.
- Help Before and After You Buy: Our staff answer setup, coil and GPZ 8000 questions by phone or email.
