At ,pro has never impressed me. I've had 2 of them. The cibola and vaquero both stomp it as far as depth and sensitivity. Now I can say as far as my compadre with stock 8 inch coil hits everything the AT,PRO DOES and I'll run it right next to an AT ,pro without any issues. Not going to a detector war folks. Just saying what I have seen . I could put the unit inside a whiyes dual field control box and make it water proof and go a tad bit farther with underwater performance. Or like my normal mods simply tuck the circuit board inside a set of grey ghost headphones .