ECHOES, why not get a masker to wear at night for sleep. It can be finetuned for those particular tones and made into white noise so you don't hear them only a soft rushing of wind or water or such... much easier to get used to. IDK but I think the maskers might be less expensive. Have you tried the white noise cds or tapes? They are great too! Just make sure you put it loud enough to cover your tinnitus! It's worth it!