Linner Mars Hero

Linner Mars Expert Review

Budget OTC
Released 
2023

Summary

The Linner Mars is a budget-priced OTC hearing aid at $399, earning a C grade in HearAdvisor's lab testing. This visible-in-ear device ranked #44 out of 56 OTC hearing aids tested, placing it in the bottom quartile of its category.

In our testing, the Mars showed a sharp split personality. Its standout strength is music streaming quality, scoring 4.60/5—well above the category average of 3.44. Feedback handling also performed admirably at 5.00/5. However, these wins come at a significant cost to speech performance, where the device struggled considerably.

Speech clarity is the Mars's most notable weakness. Both speech in quiet and speech in noise scores fell below category averages, which is concerning for a hearing aid's core function. Own-voice comfort also rated poorly, suggesting users may experience noticeable occlusion effects when speaking.

Value-conscious shoppers should note that several competitors in the same price range deliver substantially better overall performance. The Elehear Beyond ($399) scored 4.35/5, and the JLab Hear OTC at just $99.99 achieved a 3.65/5. The Linner Mars may appeal to users who prioritize music streaming and are less concerned with speech amplification, but those seeking primary hearing assistance for conversation should explore alternatives.

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

C
SoundGrade
Initial Score
2.4
Tuned Score
3.1
Speech in quiet
best
0.1
5.0
Own voice
best
1.0
5.0
Speech in noise
best
0.2
5.0
Feedback handling
best
5.0
5.0
Music streaming
best
4.6
5.0

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Lab recordings

Adjust volume to make "No hearing aids" as loud as it would be in the real world, without hearing aids. Remove hearing aids while auditioning. High-quality headphones will improve results!
Linner Mars Lab

Lab notes

Initial Fitting
Tuned Fitting
Ear Coupling
Initial Fitting
Closed Dome
Tuned Fitting
Closed Dome

Specs

Visible in Ear
Visible in Ear
Rechargeable Batteries
Rechargeable Batteries