
Summary
In the initial fit condition using a power dome coupling, the iHear MatriX showed mixed results in our lab testing. Speech in quiet scored below average at 1.80/5, while speech in noise performed better at 1.60/5—still modest but above the category baseline. The device excelled in feedback handling with a perfect 5.0/5 score and delivered above-average own voice comfort at 2.70/5, suggesting the power dome provides reasonable occlusion control. The overall initial fit score of 2.08/5 fell below average, indicating the out-of-box experience may require adjustment for optimal performance.
With tuned settings (still using the power dome coupling), the iHear MatriX showed meaningful improvement in our lab testing. Speech in quiet jumped from 1.80 to 3.20/5, now performing above the category average. Speech in noise also improved to 2.30/5. Feedback handling remained excellent at 5.0/5, and own voice comfort held steady at 2.70/5. The overall tuned fit score of 2.76/5 represents a 0.68-point improvement over initial fit, suggesting users who invest time in proper adjustment will experience noticeably better speech clarity.
Lab Review Scores
State-of-the-art Acoustic Laboratory
Quality data starts with quality recordings. HearAdvisor worked with GRAS to build a no-compromise front end so every test is repeatable and reliable.

Lab recordings







