Research Question: Is there a difference in clinical outcomes for tinnitus patients treated with the NTTP compared with the same treatment using a placebo-control device? The placebo-control device is otherwise identical to the NTTP device except that the sound stimuli are not matched to the patients' audiograms and tinnitus profile and are not specifically designed to promote relaxation. Assignment of tinnitus patients to the treatment and placebo groups is performed off site and the experimenters have no information on group assignment.