So I decided to switch up my programs a couple months back when I went in to get a replacement bluetooth receiver. Program 1 is still "auto", but I changed program 2 to be "music". The music program has basically no compression, and no noise cancellation. Ironically, I don't use this program for music, but rather for meetings and really quiet, or really noisy rooms. My office has a very loud air conditioner fan inside, but in "auto" I cannot hear it because my aids block that sound. When I first got my Rextons, I found this to be a very difficult "feature" to get used to. It sounds weird that I would have to get used to noise removal, but there are two reasons: first, the noise cancellation is not perfect, and second, it's a weird sensation to know that something is missing that you should be able to hear, but you cannot hear it for some reason. To elaborate more on the first issue. The noise cancellation is far from perfect.