This is a quick test of the detection depth of XP DEUS (all fory programs) and Golden Mask 4 Pro with fixed and manual ground balance. The tested object is a 20 mm silver medallion. The soil is heavy mineralised. As you can see the detection of both detectors is on the edge. 20 cm (8 inches) for 20 mm silver is the limit in this soil. At 25 cm (10 inches) the detection is completely gone. A good tip for the DEUS is to check the ground mineralization index and set manually the ground balance a little bit (3-5) lower. This can give you an inch depth more. The same is with the analogue Golden Mask 4 Pro - set a proper manual ground balance and you will hit deeper. You can see that the detection of the Golden Mask 4 Pro is noticeably better in the manual ground balance mode.