Eargo SE vs Linner Mercury
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.

Eargo SE
The Eargo SE is a premium-priced OTC hearing aid at $1,699, featuring an invisible-in-ear design and earning a B grade with a SoundScore of 3.1/5 in our lab testing. This places it in the top 85% of the OTC hearing aid category, ranking #56 of 65 devices tested. In our testing, the Eargo SE demonstrated solid performance in speech clarity for quiet environments, scoring 3.2/5—0.43 points above the category average. Feedback handling was excellent at 4.6/5, meaning users should experience stable performance without whistling issues. However, the device showed limitations in challenging listening situations, with speech in noise scoring 1.3/5, which falls 0.23 points below the category average. A notable weakness is the complete absence of music streaming capability, scoring 0.0/5 compared to the category average of 1.92/5. Own-voice comfort scored 2.4/5, slightly below the category average. These mixed results suggest the Eargo SE prioritizes its discreet form factor over comprehensive audio features. The Eargo SE may appeal to users who prioritize an invisible design and primarily need help hearing conversations in quieter settings. However, given its premium price point and the availability of alternatives like the Jabra Enhance Select 50R that deliver stronger overall scores at lower prices, value-conscious consumers may want to explore other options before committing.

Linner Mercury
The Linner Mercury is a budget OTC hearing aid priced at $387, earning a B grade with a SoundScore of 3.0/5 in our lab testing. This visible-in-ear style device ranks #60 of 65 in the OTC Hearing Aid category, positioning it in the lower tier of available options. In our standardized testing, the Mercury demonstrates excellent feedback handling at 4.7/5, scoring 0.16 points above the category average. This means users are unlikely to experience whistling or squealing during typical wear. However, the device shows limitations in other key areas. Speech in quiet scores 2.2/5, falling 0.62 points below the category average, while speech in noise performance is low at 1.0/5, sitting 0.48 points below average. Own-voice comfort is also low at 1.6/5, measuring 0.91 points below the category average. The most significant limitation is music streaming, which scores 0.0/5—a full 1.92 points below the category average. Users who plan to stream phone calls or music through their hearing aids should consider alternatives. At this price point, competitors like the Elehear Beyond and Apple AirPods Pro 2 offer substantially higher overall scores. The Linner Mercury may suit budget-conscious first-time users who prioritize stable, feedback-free wear over streaming capabilities or challenging listening environments. However, those seeking better speech clarity or music quality should explore other options in this price range.
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Performance metrics
Scale 1-5 (Tuned)
Speech level
Adjust input dB (Tuned)
Amplification (REIG)
Insertion gain at 65 dB (Tuned)
Fitting configuration for tuned fit