Linner Mercury vs Signia Active Pro IX

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.

The Signia Active Pro IX is a premium prescription hearing aid with a visible-in-ear style, priced at $3,199. In HearAdvisor's lab testing, it earned an A grade with a SoundScore of 4.7/5, ranking #7 among 36 prescription hearing aids tested—placing it in the top 17% of its category. This 2024 release demonstrates particular strength in speech performance. Speech in quiet scored a strong 4.3/5, sitting 0.93 points above the category average. Speech in noise measured 2.9/5, which is above the category average by 0.89 points, though only mixed in absolute terms. Own-voice comfort scored a solid 3.3/5, exceeding the category average by 0.55 points. Feedback handling presents a more nuanced picture at 3.4/5—solid in absolute terms, though 1.31 points below the category average. Music streaming scored 2.9/5, slightly above the category average but mixed overall. The device features rechargeable batteries, iPhone and Android streaming, and hands-free calling capabilities. The Signia Active Pro IX is best suited for those prioritizing speech clarity who want a discreet earbud-style design. It earned HearAdvisor's Expert's Choice Award for 2024. Shoppers in this premium price tier may also consider the Phonak Sphere Infinio or Oticon Intent, which scored higher in our testing, or explore options like the Rexton Reach at Costco for similar performance at a lower price point.