Comparison Chart For Ace Detectors 

https://garrett.com/hobbysite/hbby_ace_intl_comparison_chart_en.aspx#

The king of ACEs, the ACE 400i includes advanced features like Iron Audio, Digital Target ID, and Frequency Adjust to help you dig more treasure and less trash.

Includes 3 FREE Accessories: Garrett's Clearsound Headphones, ACE environmental cover up and coil cover

• Volume control Garrett ClearSound Easy Stow headphones
• ACE Environmental Coverup
• 8.5" x 11" searchcoil cover

Key Features

• New Iron Audio: allows user to hear discriminated iron targets and to alter the mid-tone signal range.
• New Digital Target ID: 0 to 99 scale offers target information
• New higher frequency (10 kHz) provides better sensitivity on low and medium-conductivity targets (i.e. gold, lead)
• New Adjustable Frequency to help eliminate interference
• New Camlocks for better stem stability
• New Includes Pulse-Width Modulation audio: sharper, more responsive audio
• 8.5" x 11" (22 x 28cm) PROformance™ submersible DD searchcoil offers excellent coverage, depth
• Enhanced Iron Resolution: 3x the iron resolution of an ACE 250, to help separate good targets from adjacent junk iron
• Includes Electronic Pinpointing: precisely locates targets and
  speeds recovery
• Notch Discrimination: Modify discrimination patterns based on what you are seeking.
• Five Search Modes (plus Pinpoint)
• Eight (8) Sensitivity/Depth adjustments
• Coin Depth Indicator determines target depth
• Includes revised Target ID legend and Mode/Discrimination
  patterns to better suit the search needs of international users.

Changes between 400 and 400i:

• Redivision of mid-tone/high-tone audio break points.
• Increased number of Iron Discrim pixels.
• U.S. coins removed from target legend.
• Variance in Mode/Discrim patterns.

Specifications