Linner Mercury vs Meta Ray-Ban Glasses (Gen 2)
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-priced OTC hearing aid that earns a B grade with a SoundScore of 3.1/5 in our lab testing. Priced at $387, it ranks #60 of 65 devices in the OTC Hearing Aid category, placing it in the top 91% of the category. In our testing, the Mercury shows a mixed performance profile. Its standout strength is excellent feedback handling at 4.7/5, which is 0.16 points above the category average—meaning users are unlikely to experience whistling or squealing during normal use. However, speech clarity metrics fall below category norms: speech in quiet scores 2.2/5 (0.62 points below average), and speech in noise scores a low 1.0/5 (0.48 points below average). Own-voice comfort also scores low at 1.6/5, sitting 0.91 points below the category average. Music streaming is a notable weakness, scoring 0.0/5—a full 1.92 points below the category average. Users who prioritize streaming audio from their phone should consider alternatives. The device uses a rechargeable battery and features a visible in-ear design with power dome coupling. At this price point, several competitors offer stronger overall performance. The Linner Mercury may appeal to budget-conscious consumers who prioritize feedback-free operation over speech clarity and streaming quality, but those seeking better speech understanding in challenging environments should explore higher-scoring options in this price range.

Meta Ray-Ban Glasses (Gen 2)
The Meta Ray-Ban Glasses (Gen 2) is a budget-priced amplification product at $375 that earned a B grade with a SoundScore of 3.8/5 in our lab testing. This hearing glasses device ranks #2 of 8 in the Amplification Product category, placing it in the top 13% of its class. This device excels in areas that complement its lifestyle-focused design. Music streaming performance is strong at 4.3/5, scoring 3.14 points above the category average—a standout result for amplification products. Own-voice comfort is excellent at 4.7/5, measuring 2.06 points above category average, meaning users should experience minimal occlusion or unnatural sound when speaking. However, core speech amplification metrics reveal limitations. Speech in quiet scores 2.7/5, which is 0.62 points above the category average but only mixed in absolute terms. Speech in noise is low at 1.6/5, though still 0.25 points above the category average of 1.37/5. Feedback handling is a notable weakness at 1.9/5, falling 2.38 points below the category average—users may experience more whistling or instability than with other amplification devices. The Meta Ray-Ban Glasses (Gen 2) is best suited for consumers who prioritize music streaming quality and comfortable own-voice perception over maximum speech clarity. Those seeking primary amplification for conversation in challenging listening environments may want to consider alternatives with stronger speech performance.
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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