When they are seriously bitten by the treasure hunting bug, some detector users want the facility to adjust their detectors precisely to suit the chosen site and their personal preferences. The CS990XD is excellent for this style of detecting, but it is necessary to gain an understanding of the relationship between ground effect and discrimination in order to use the controls correctly. Ground mineralisation and wet salt can act like a metal target and give a signal, but when you dig, there's nothing there. The CS990XD provides the user with the ability to discriminate those false ground signals which is a real plus at this price level of detector. In addition there is audio and meter discrimination making the CS990XD a superb analytical detector for real enthusiasts !

As with all non-motion machines, the retune button is used to keep the detector at the optimum threshold position. When the CS990XD is set to its 'beach' mode, there is a level control which enables the machine to ignore the false signals coming from the beach. On the 'inland' setting it is possible to analyse targets with meter and audio readings, and save a lot of time digging up worthless items.

If you're a complete beginner, the CS990XD is probably not for you, but there are some sites where this machine will get a result where others will fail. The CS990XD is a unique combination of features, put together by people who really understand detector technology.