A new Single Frequency of 4 kHz has been added for the Minelab Equinox 600 and Minelab Equinox 800 to add to the existing 5, 10, 15, 20, and 40 kHz options. This new 4 kHz frequency enhances the detection of large deep targets, particularly those found in parts of Asia. As a result of optimizing for these conditions, this new frequency may respond differently to users compared to the other single frequencies. 

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All other single and multi-frequency settings are unchanged in their performance. 

In addition to the 4 kHz upgrade feature, various stability enhancements have been included.