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Quest Q40#36of 50

Quest Q40

The Quest Q40 delivers genuine multi-frequency performance at a price point that undercuts many competitors, making it a strong choice for relic hunters and coin shooters who need reliable depth and discrimination across varied soil conditions.

8.7
Sift ScoreRanked #36 of 50 reviewed · #9 in Multi-Frequency
  • True multi-frequency detection
  • Fast target recovery
  • Waterproof to 10ft
Operating Frequency
Multi-Frequency Dynamic (5-14.5kHz range)
Search Coil Size
11" DD waterproof coil
Weight
3.3 lbs (1.5kg)
Display Type
5" backlit LCD with numeric Target ID

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01The verdict

The Quest Q40 delivers genuine multi-frequency performance at a price point that undercuts many competitors, making it a strong choice for relic hunters and coin shooters who need reliable depth and discrimination across varied soil conditions. While newcomers may need time to master its menu system, experienced detectorists will appreciate the fast recovery speed and accurate target ID.

Our scorecard

  • Depth8.7
  • Separation9.0
  • Ergonomics8.9
  • Value9.2

Best forParks, beaches and fields with one machine

02Specifications

BrandQuest
CategoryMulti-Frequency
Operating FrequencyMulti-Frequency Dynamic (5-14.5kHz range)
Search Coil Size11" DD waterproof coil
Weight3.3 lbs (1.5kg)
Display Type5" backlit LCD with numeric Target ID
Waterproof RatingIP68, submersible to 10ft (3m)

03Pros & cons

What we like

  • Excellent discrimination in iron-infested and relic sites
  • Multi-frequency operation handles mineralized soil well
  • Bright, easy-to-read display even in sunlight
  • Comfortable balance for long detecting sessions
  • Fast target separation in trashy areas
  • Affordable compared to other multi-frequency detectors

What to know

  • Learning curve for beginners due to menu depth
  • Stock coil can be heavy over very long hunts
  • Wireless headphones sold separately in base package
  • Occasional false signals in heavily mineralized black sand

04Key features

  1. 01Multi-frequency Dynamic Multi-Frequency (DMF) technology
  2. 025" backlit LCD display with numeric target ID and depth indicator
  3. 03Three preset search modes plus two customizable user modes
  4. 04Fast Recovery Speed (FRS) for trashy sites
  5. 05Lightweight S-rod shaft with adjustable armrest
  6. 06Waterproof coil rated to 10ft (3m) submersion
  7. 07Wireless headphone compatibility via built-in module

05Full review

The Quest Q40 is a lightweight, entry-friendly metal detector built for hobbyists and beginners who want serious performance without a steep learning curve. Operating at 7.0 kHz, it strikes a balance that makes it effective across coin shooting, relic hunting, and general all-purpose detecting. Its ergonomic design keeps the unit well balanced during long sessions in the field, reducing arm fatigue even when swinging for hours at a time. The simple control housing features an easy-to-read backlit display, allowing users to quickly interpret target information even in low-light conditions such as early morning or dusk hunts.

What sets the Q40 apart is its blend of simplicity and customizable detecting modes. With multiple pre-set search modes, including coin, relic, and jewelry settings, users can quickly adapt to different terrains and target types without fumbling through complex menus. The adjustable sensitivity and discrimination controls give users the ability to filter out unwanted trash items like bottle caps and pull tabs, while still maintaining strong depth on valuable targets. Its waterproof search coil allows detecting in wet grass, shallow water, and even light rain, expanding the range of locations where this detector can be used effectively.

Durability and comfort were clearly prioritized in the Q40’s construction, from its sturdy shaft locks to its collapsible design that makes transport and storage simple. The adjustable armrest and multiple shaft segments accommodate users of different heights, ensuring a customized fit for each detectorist. Powered by widely available batteries, the Q40 offers extended operating time without requiring proprietary chargers, making it practical for extended outings away from power sources. Altogether, the Quest Q40 delivers a dependable, user-focused experience, making it a strong choice for those stepping into the metal detecting hobby or looking for a reliable secondary detector for varied outings.

Ready to swing it?

Quest Q40

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Sift Score 8.7Q40
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