Hearing augmentation can seem a bit too technical to understand, but Clearasound has a set of fact sheets that cover all the different types and different situations when each one should be used. Too often systems do not work or are not turned on and there is a lot of confusion as to how these systems operate. The best way to test a system to see if it is working is to ask someone who is wearing a hearing aid with a ‘T’ switch. Clearasound is one company that has a technical manager who wears such a hearing aid. This seems the only way to be sure that the system is connected properly, switched on and functioning. Too many systems fail to work even when technicians claim they do. Here are some of the fact sheets on the Clearasound site.