Linner Mercury vs RCA In-Ear
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.

RCA In-Ear
The RCA In-Ear is a budget-priced OTC hearing aid available for $249, earning a C grade with a SoundScore of 2.8/5 in our lab testing. This places it near the bottom of the OTC hearing aid category, ranking 64th out of 65 devices tested. In our standardized testing, the RCA In-Ear shows a mixed performance profile. Its standout strength is excellent feedback handling, scoring a perfect 5.0/5—0.46 points above the category average. This means users are unlikely to experience whistling or squealing during normal wear. Own-voice comfort scores 2.6/5, which is essentially at the category average (+0.09 points), offering mixed but acceptable performance for how your own voice sounds while wearing the devices. However, the core speech performance metrics present significant limitations. Speech in quiet scores just 1.0/5, falling 1.79 points below the category average, and speech in noise also scores 1.0/5, sitting 0.48 points below average. Music streaming scored 0.0/5, indicating this device is not suitable for audio entertainment purposes. At this price point, buyers have considerably stronger options. Competitors like the Lucid Enrich Pro and JLab Hear OTC offer better sound performance at lower prices. The RCA In-Ear may appeal to those prioritizing feedback-free wear above speech clarity, but most users seeking meaningful hearing benefit should consider higher-performing alternatives in this budget segment.
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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