Within the series, the 300 is the mid-range detector in quality between the basic, entry-level 200 and the higher-end, entry-level 400. The 400 has Iron Audio, 10 kHz frequency, and an 8.5” x 11” DD searchcoil.
The 200 is simplistic and basic in design with only one Iron Discrimination Segment, fixed notch discrimination, three search modes, four sensitivity adjustments, no pinpoint feature, and it operates at a 6.5 kHz frequency that is fixed. No official accessories are included with the ACE 200 from the brand, but there are multiple package buys from various sellers.