Furthermore, hearing aids and noise generators have been shown to provide limited clinical benefits when used in tinnitus management programs (Hiller & Haerkotter, 2005; Moffat et al., 2009), and these technologies are further limited by problems with user acceptability. Many tinnitus sufferers report that they find hearing aids intolerable to wear due to their decreased sound tolerance together with the unpredictability of amplified ambient sounds. Similarly, many people fitted with noise generators find the sound they produce unpleasant to listen to for the extended periods each day for which their use is recommended. As a result, for both hearing aids and noise generators, return-for-credit and "left-unused-in-the-drawer" rates are very high (J.A. Henry, Schecthter, Nagler, & Fausti, 2002; Hiller & Haerkotter, 2005).