Please see the following item for sale on Ebay. this device helped me to move towards Habituation and I no longer need it. I still have Tinnitus but the symptoms have now reduced (it took 18months for the symptoms to start improving. My Hyperacusis has actually gone completely).
I hope this device will help you to reach Habituation.
http://cgi.ebay.co.uk/Tinnitus-Puretone-In-Ear-White-Noise-Generator-MM2-/180593020427?pt=UK_Health_Beauty_Mobility_Disability_Medical_ET&hash=item2a0c2ece0b (external link, opens new browser window)