Is manual ground adjust better than “automatic” or “preset”?
Typically, you can get just a little bit more depth from your detector by properly adjusting the Ground Control of a manual type detector than you could expect from a factory set or “automatic” type of turn-on-and-go detector. The preset machines will always get good performance no matter what type soil you are hunting in. Adjusting the manual machine may increase the detection depth a small bit, if it is done properly, but if it is not done properly, the results may be horrendous. I feel that for the average detector user, a preset or automatic detectors performance is superior to the results which may be obtained with an improperly set manual machine.