Asking because I don't think 15 minutes is enough time for me to find out if it works and get a refund if it does not work. I need a little more volume coming out of that small speaker for car rides so my daughter can hear better. She is only three and even with those child-specific earphones, I don't want her wearing earphones yet. I know it can't go too much further in volume or the speaker may blow out. Any help is appreciated.