I was nrver much of a multi-tone guy but the 2 tones on the DVG is amazing. I fortunately found a DVG to replace the one that I sold (big mistake selling it). I have 3 coils for it, the stock coil, the super six coil, and the 14" epic coil. I went to a woodchip tot lot this morning with the super six coil runing in 2 tone mode. I decided to see what one of the targets was that came in with a low tone, it was a bobby pin. The next target was a high tone and it was a tiny piece of jewelry about the size of half of an eraser that is on a pencil. It just blows me away how well the DVG knows the difference between 2 very small items. Awesome machine.