
Summary
In the initial fit condition using closed domes, the Linner Mars delivered a fit score of just 1.30/5—well below category average. Speech in quiet scored a minimal 0.10/5, and speech in noise reached only 0.20/5, both significantly underperforming typical OTC results. Own-voice comfort was poor at 1.00/5, indicating substantial occlusion issues. The bright spots were feedback handling at a perfect 5.00/5 and music streaming at 4.60/5. Out of the box, this device prioritizes stability and audio entertainment over speech intelligibility.
After tuning—while maintaining the same closed dome coupling—the Mars improved its fit score by 0.71 points to 2.01/5, though this remains below the category average. Speech in quiet improved notably from 0.10 to 1.50/5, and speech in noise rose to 1.00/5. However, own-voice comfort remained unchanged at 1.00/5, and both feedback handling and music streaming maintained their strong scores. Tuning helped speech performance but couldn't overcome the device's fundamental limitations in this area.
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







