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

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.
Choice

Signia Active Mini IX
The Signia Active Mini IX is a premium prescription hearing aid with a visible-in-ear design, priced at $4,696. In HearAdvisor's lab testing, it earned an A grade with a SoundScore of 4.5/5, ranking #14 of 39 prescription hearing aids tested—placing it in the top 33% of its category. This device demonstrates strong speech clarity performance in our testing. Speech in quiet scored 4.1/5, which is +0.71 points above the category average of 3.40/5. Speech in noise measured 2.6/5—above the category average by +0.46 points, though only mixed in absolute terms at 2.6/5. Music streaming is a notable strength at 3.6/5, outperforming the category average by +0.84 points. Own-voice comfort scored a solid 3.2/5, sitting +0.50 points above average. However, feedback handling represents a limitation for this device, scoring 2.5/5—a mixed result that falls -2.22 points below the category average of 4.72/5. Users sensitive to feedback may want to discuss this with their hearing care provider. The Signia Active Mini IX delivers excellent overall sound performance with particular strengths in speech clarity and streaming audio quality. It's best suited for users who prioritize these capabilities and can work with their provider to manage the feedback handling limitations. The earbud-style design offers a modern, discreet appearance for those who prefer visible-in-ear devices.
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Performance metrics
Scale 1-5 (Tuned)
Lab metric by fit
Scale 1-5 (Tuned)
Speech level
Adjust input dB (Tuned)
Amplification (REIG)
Insertion gain at 65 dB (Tuned)
Fitting configuration for tuned fit