Initial fit observations
In initial fit testing with a tulip dome and medium-power receiver using ReSound's Audiogram+ formula, the Vivia 9 achieved a normalized score of 3.9/5. Speech in quiet performed well at 3.7/5, while own-voice comfort was solid at 3.4/5. Speech in noise was notably low at 1.0/5. Feedback handling was strong at 4.2/5, and music streaming scored 2.3/5. This out-of-box configuration delivers reasonable everyday speech clarity but struggles with challenging listening environments.








