Hearing Health FoundationHearing Health Foundation (HHF) is the largest non-profit funder of hearing research. Since 1958, HHF has given away millions of dollars to hearing and balance research, including work that led to cochlear implant technology and now through the Hearing Restoration Project is working on a cure for hearing loss and tinnitus. HHF also publishes Hearing Health magazine, a free consumer resource on hearing loss and related technology, research, and products.