An odd duck this deus is.Can jump the reactivity to say at 0 and silencer at -1 and hit deep coins with 12 kHz,I use a audio response of 5.In saying that, it will miss shallow coins in trashy spots unless I crank the reactivity up.The silencer,I leave at -1 or 0 but maybe I need to learn more about correct settings. Yesterday for whatever reason, I was hitting deep nickels. Some old toasted nickels but I never dug a nickel deeper than the Mi6 pointer before until yesterday. Maybe improper ground balance ?