Linner Mercury vs Resound Vivia 9 60S microRIE
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.

Resound Vivia 9 60S microRIE
The ReSound Vivia 9 60S microRIE is a premium prescription behind-the-ear hearing aid released in 2025, currently available at $3,798. In our lab testing, it earned a B grade with a SoundScore of 3.9/5, ranking #29 of 39 prescription hearing aids tested. This device shows a mixed performance profile. Its standout strength is own-voice comfort, scoring 3.4/5—a solid result that sits 0.70 points above the category average. Speech clarity in quiet environments also performs at category average with a score of 3.4/5. Feedback handling is strong in absolute terms at 4.2/5, though this falls 0.52 points below the category average, reflecting the high bar set by competing prescription devices. The Vivia 9's most notable weakness is speech understanding in noisy environments, where it scored just 1.1/5—a low result that trails the category average by 0.96 points. Music streaming performance is mixed at 2.6/5, sitting slightly below average. These limitations are worth considering given the premium price positioning. For listeners who prioritize comfortable own-voice perception and primarily encounter quieter listening situations, the Vivia 9 may be suitable. However, those frequently in challenging noise environments should note that several alternatives in this price range—including the Phonak Sphere Infinio and Oticon Intent—deliver stronger overall performance in our testing. Budget-conscious shoppers may also find comparable sound quality at lower price points with options like the Jabra Enhance Pro 20 at Costco.
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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