I am totally deaf in my right ear, and in recent years I’ve been losing hearing in my left ear. I bought this primarily so I can watch TV without turning the volume way up, or constantly asking my wife “What did he say?”. I thought I’d give this a try and I have been pleasantly surprised. I had tried a product similar years ago and didn’t like it at all, but this one is doing very well. I have left it on the factory settings because frankly I’m a little intimidated with screwing around with the settings. I’ve had it for about 3 weeks now and am very pleased.