I have had a cookie bite hearing loss since, diagnosed almost 45 years ago, but it's only been in the last 5 to 10 years that I've begun to have improvement in my hearing with the use of hearing aids. I too experienced hearing aids amplifying sounds I didn't need, and didn't really get a good fit until the last 5 to 7 years. I currently wear Phonak Audio. One of this things that I learned was that the size of your ear canal can also impact the effectiveness of the hearing aids. I work with an audiologist that AuD. I had molds done of my ear canal, and that helped the audiologist to guide me towards the correct domes. The Phonak hearing aids allow the volume to be turned down in the low and high frequencies where it is not needed for the CB type loss, and increased in the speech frequencies. I had no idea what I was missing. The ear molds attached to replace the domes have been most effective for me. One of the things that was shared with me was that the domes need to fit in your ear to allow the sound in, but also to prevent the sound from going out. If you have a larger ear canal, the domes may work better, but my AuD worked to have me try several and took molds to find the best fit for my ear. Also, it does take several adjustments to get the settings to work. If you can find someone who will do a check in after two weeks, a month, and three months after the initial fit, it is worth going through that process to get the best hearing experience.