I have had tinnitus for almost a year now and very annoying high pitched ringing in left ear... There is no known cure for this, and was told that swelling inside the ear caused my problem... I am not advertising a special type of product, but I purchased a desk air purifier from Walmart and put it near my bed at night and found that it took away the sound so I could sleep at night... Such a blessing... I do not use the ion side of this machine but only use the air circulation side on low... It has not taken away the tinnitus completely but has lessened it and at night, I do not hear it at all when I use the machine... I hope this helps someone struggling with tinnitus... Here is a picture of the Holmes air purifier I bought from Walmart but like I said, other brands might also work... 🙂