In a way, this question was already touched on and documented earlier. But, it may just be the question that gets asked the most as everyone wants to do what is best for their kids. Due to many of the technologies that were already alluded to, headphones can be safe for them to use. At the same time, if you allow them to listen to your high-quality Bose model then that will be another story. Also, it is not like one song that plays at a high volume is going to damage your child’s hearing.