OTOFONIX GROOVE User Manual page 5

domes virtually eliminate all feedback that occurs from higher amplification, but they also maximize the
"occlusion effect".
A Hybrid Style Dome has a small hole or vent and features of both the open and closed dome.
These domes provide greater amplification in the low frequencies than the open domes. The
smaller vent also significantly minimizes the "occlusion effect" and reduces feedback, making
them more comfortable than the closed domes. These domes are recommended for those with a mild to
moderate hearing loss.
ZipTip domes are the best hybrid domes that we have found to date. They provide a superb
fit and use a single 3mm vent hole which reduces the "occlusion effect" while increasing
amplification and providing for the most comfortable fit.
We highly recommend that you contact us about a set of ZipTips if you are not getting the proper
fit, or enough amplification from your device. Call (704) 380-0508.