I thought I would share this with my fellow detectors. I have always wanted a way to cherry pick gold through all the pull tabs. I woke up during the night several days ago and had an idea. I put a headphone splitter in my phone jack and connected a chromatic to tuner the the quattro. Running the quattro in the conductive mode I found that 90% of pull tabs will sound at the c or d note. All of the gold I have tested has sounded A,E,F,or G note. Maybe some of you have good enough hearing to tell the difference between a pull tab and gold but my hearing is not that good. Also I don't come across gold often enough to remember the sound. I have used this setup in a test garden letting my son try to trick me and the only thing that has fooled me is the tail off of a beaver tail tab. I am excited and can't wait to try it in the park and at the beach. I know this is not 100% but it will greatly improve my odds. Does anyone know if someone has tried this before? The whole setup cost about $30.