Ace 350 vs Ace 400: Which Is Right for You?

Versus
By Maya Collins May 20, 2026
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Are you on the hunt for your next metal detector and torn between two popular options? The Garrett Ace 350 and the Garrett Ace 400 are both fantastic choices for beginners and seasoned detectorists alike. Each offers a compelling set of features designed to help you unearth hidden treasures.

Deciding which one will best suit your detecting needs can be a challenge. Factors like target ID, search modes, and included accessories can make a significant difference in your overall experience.

This comparison dives deep into the ace 350 vs ace 400, breaking down their key differences. We’ll help you understand their strengths and weaknesses so you can make an informed decision and get out there detecting with confidence.

Specs at a Glance

Featureace 350ace 400
TypeEntry-levelMid-range
Target UserBeginnersHobbyists/Enthusiasts
Operating Frequency6.5 kHz10 kHz
Ground BalanceFixedAutomatic
DiscriminationBasic Notch DiscriminationAdjustable Notch Discrimination
Sensitivity AdjustmentYesYes
Target IDNumeric (0-99)Numeric (0-99)
Audio Tones3 Tones4 Tones
Waterproof CoilYesYes
Adjustable ShaftYesYes
Battery Type2x AA2x AA
Weight2.2 lbs (1 kg)2.2 lbs (1 kg)

Feature-by-Feature Breakdown

Target Detection

  • Ace 350: Features a 7″ x 10″ PROformance™ search coil, offering good sensitivity and depth for general-purpose detecting. It’s effective for finding coins, relics, and jewelry in various ground conditions.
  • Ace 400: Equipped with a larger 8.5″ x 11″ PROformance™ search coil, providing enhanced depth and coverage compared to the ace 350. This larger coil is particularly beneficial for wider searches and detecting deeper targets.
  • Winner: ace 400

Frequency

  • Ace 350: Operates at a single frequency of 8.25 kHz. This is a versatile frequency suitable for a broad range of targets but might not be optimal for very small or low-conductivity items.
  • Ace 400: Utilizes a higher operating frequency of 10 kHz. The increased frequency makes it more sensitive to smaller targets, such as gold jewelry and hammered coins, which are often missed by lower-frequency detectors.
  • Winner: ace 400

Iron Discrimination

  • Ace 350: Offers 12 segments of notch discrimination, allowing users to exclude unwanted iron targets. This provides a decent level of control for filtering out trash.
  • Ace 400: Features 20 segments of iron discrimination, offering a more granular and precise control over iron rejection. This advanced discrimination helps in cleaner digs and reduces frustration from iron trash.
  • Winner: ace 400

Adjustable Sensitivity

  • Ace 350: Includes 8 levels of sensitivity adjustment. This allows users to fine-tune the detector’s sensitivity to ground mineralization and potential interference, helping to prevent false signals.
  • Ace 400: Provides 5 levels of adjustable sensitivity. While fewer levels than the ace 350, it still offers adequate control for most detecting scenarios and is managed by the detector’s overall advanced features.
  • Winner: ace 350

Target ID Cursor Segments

  • Ace 350: Features 12 segments for Target ID. This gives a visual indication of the likely type of metal detected, aiding in target identification and decision-making.
  • Ace 400: Boasts 12 segments for Target ID, identical to the ace 350. This provides consistent visual cues for target identification.
  • Winner: Tie

Included Accessories

  • Ace 350: Typically comes with a coil cover and batteries. It’s a solid entry-level package for beginners.
  • Ace 400: Often includes a larger coil cover, batteries, and sometimes a carry bag or headphones. The inclusion of more accessories enhances its out-of-the-box readiness and value.
  • Winner: ace 400

Ground Balance

  • Ace 350: Features manual ground balancing. This allows the user to manually adjust the detector to the specific ground conditions for optimal performance and reduced false signals.
  • Ace 400: Equipped with automatic ground balancing. This feature automatically adjusts to ground mineralization, making it easier to use for beginners and providing consistent performance across different terrains without manual intervention.
  • Winner: ace 400

Digital Signal Processing (DSP)

  • Ace 350: Does not explicitly advertise advanced DSP features. Its performance is based on established analog and basic digital processing.
  • Ace 400: Utilizes advanced Digital Signal Processing (DSP). This technology enhances target separation, reduces noise, and improves overall detection accuracy, providing a more refined detecting experience.
  • Winner: ace 400

Winner by Category

CategoryWinner
Beginner Friendlinessace 350
Performance in Varied Groundace 400
Features & Controlace 400
Value for Absolute Beginnersace 350
Overall Versatilityace 400

What They Have in Common

  • Ease of Use: Both the ace 350 and ace 400 are designed with user-friendliness in mind, making them accessible for those new to metal detecting. Their intuitive controls and straightforward operation allow beginners to get started quickly.
  • Lightweight Design: Both detectors feature a lightweight construction, weighing in at a very manageable 2.2 lbs (1 kg). This ensures comfortable extended search sessions without causing undue fatigue.
  • Waterproof Search Coil: A significant shared feature is the waterproof search coil. This allows users to confidently search in shallow water, wet grass, or along shorelines without worrying about damaging the coil.
  • Adjustable Shaft: Both models come with an adjustable shaft, enabling users of different heights to customize the detector’s length for optimal ergonomics and comfort during use.
  • Numeric Target Id: Both the ace 350 and ace 400 provide numeric Target ID (0-99) which helps users identify potential targets before digging, improving efficiency in the field.

Ace 350 Vs Ace 400 Buying Guide

Target User & Budget

The Ace 350 is an excellent entry-level metal detector, making it ideal for beginners or those on a tighter budget. Its user-friendly interface and straightforward operation allow new hobbyists to get started quickly without feeling overwhelmed. The Ace 400, while still accessible, offers a slight step up in features and performance, catering to those who might have a little more to spend and are looking for enhanced capabilities from the outset. (See Also: Clarity Skin Care Vs Dermalogica )

Key Features & Technology

Both detectors share Garrett’s renowned Ace series technology, emphasizing ease of use. The Ace 350 comes with a standard DD coil, offering good depth and target separation. The Ace 400 elevates this with a larger, higher-frequency DD coil, which generally results in better sensitivity to smaller targets and a slightly deeper reach into the ground. The Ace 400 also boasts additional features like Iron Audio and a digital target ID display, providing more nuanced information about detected objects.

Performance & Depth

While both detectors perform admirably for their price points, the Ace 400 generally exhibits superior performance. Its higher operating frequency and enhanced coil design allow it to detect targets at a slightly greater depth and with improved sensitivity to finer details. This means the Ace 400 is more likely to uncover older coins or smaller relics that might be missed by the Ace 350. However, for general coin and relic hunting in parks and fields, the Ace 350 is still a very capable machine.

Intended Use Cases

The Ace 350 is a versatile detector perfect for general-purpose searching in parks, yards, and light-duty field hunting. It’s a fantastic companion for someone just starting out or for family outings where simplicity is key. The Ace 400, with its enhanced features, is better suited for users who want to push their detection capabilities a bit further. It can handle more challenging conditions, such as mineralized soil, and offers a more refined experience for those serious about finding a wider range of targets. (See Also: Nintendo Switch Vs Nintendo Lite )

Who Should Buy What?

Buy ace 350 If…

  • You are an absolute beginner looking for your first metal detector and want a simple, affordable option.
  • Your primary detecting locations are parks, yards, and areas with less mineralized soil.
  • You are on a tight budget but still want a reliable detector from a reputable brand.

Buy ace 400 If…

  • You have some experience with metal detecting or are willing to invest a little more for enhanced features.
  • You plan to detect in a variety of conditions, including potentially more mineralized ground, and want better performance.
  • You desire more control over your discrimination settings and appreciate the benefits of automatic ground balancing.
  • You want a detector that offers a slightly more advanced audio feedback system for better target identification.

Frequently Asked Questions

What is the primary difference in target identification between the Ace 350 and Ace 400?

The Ace 350 provides a basic target ID system, giving users a general idea of what they might have found. The Ace 400, however, features a digital target ID display with a numerical scale (0-99). This offers a more precise indication of the target’s likely composition, helping users make more informed decisions about digging and improving their target recovery efficiency.

Which detector is better for finding smaller targets like jewelry?

The Ace 400 is generally considered better for finding smaller targets like jewelry. Its higher operating frequency and the included larger DD coil provide enhanced sensitivity to low-conductivity items. This means it’s more likely to pick up the faint signals from rings, earrings, and other delicate pieces that might be missed by the Ace 350.

Is the Ace 400 significantly heavier than the Ace 350?

Both the Ace 350 and Ace 400 are designed with user comfort in mind and share a similar lightweight and ergonomic design. The weight difference between the two models is negligible, and both are comfortable to swing for extended periods. This makes them suitable for all-day detecting sessions without causing undue fatigue. (See Also: Wingstop Tenders Vs Boneless Wings )

Can I upgrade the coil on the Ace 350 to match the Ace 400?

Yes, it is possible to upgrade the coil on the Ace 350. You can purchase compatible aftermarket coils, including those that are similar in size and frequency to the coil that comes with the Ace 400. However, it’s important to ensure compatibility and note that upgrading the coil might not fully replicate all the advanced electronic features of the Ace 400.

Which detector offers better performance in highly mineralized ground?

The Ace 400 generally offers better performance in highly mineralized ground due to its advanced ground balancing capabilities and higher operating frequency. These features allow it to filter out ground noise more effectively and maintain sensitivity to targets, whereas the Ace 350 might struggle more in such conditions, leading to more false signals and reduced depth.

Final Verdict

The Garrett Ace 350 is a fantastic entry-level detector, offering great value and ease of use for beginners. However, the Garrett Ace 400 builds upon this solid foundation with enhanced features like digital target ID, Iron Audio, and a more sensitive coil. These upgrades provide a superior detection experience, better target identification, and improved performance, especially for those seeking to find smaller or deeper targets. For hobbyists looking for a more capable and refined machine without breaking the bank, the Ace 400 stands out.

Winner: Ace 400