Audicus Omni 2 vs Linner Mars
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.
Choice

Audicus Omni 2
The Audicus Omni 2 is a premium-priced behind-the-ear OTC hearing aid available for $1,898. With a SoundScore of 4.6/5 and an A grade, it ranks #5 among 65 OTC hearing aids tested, placing it in the top 6% of its category. In our lab testing, the Omni 2 demonstrates strong speech clarity in quiet environments, scoring 4.2/5—well above the category average by 1.38 points. Speech in noise performance is more modest at 2.3/5, which is above the category average by 0.79 points but mixed in absolute terms. This pattern suggests the device handles everyday conversations well while challenging listening situations may still present difficulty. Music streaming is a particular strength, scoring 3.6/5 and exceeding the category average by a substantial 1.68 points. Feedback handling is excellent at 4.5/5, virtually matching the category average. Own-voice comfort scores a solid 3.0/5, which is 0.49 points above average for OTC devices. The Omni 2 offers both rechargeable and disposable battery options, along with streaming compatibility for iPhone and Android devices with hands-free capability. It has earned Expert's Choice Awards for both 2023 and 2024. Consumers seeking alternatives in this price range may also consider the similarly-priced Lucid Tala, while the lower-priced Lexie B3 offers competitive performance for those with tighter budgets.

Linner Mars
The Linner Mars is a budget-priced OTC hearing aid that earns a B grade with a SoundScore of 3.1/5 in our lab testing. At $399, it falls in the lowest price tier for OTC devices, though its overall sound performance ranks #55 of 65 in the OTC Hearing Aid category. This device presents a stark contrast in performance across different listening situations. Music streaming is a genuine standout, scoring an excellent 4.6/5—well above the category average. Feedback handling also earns a perfect 5.0/5, meaning users shouldn't experience whistling or squealing issues. However, the Mars struggles significantly with its core hearing aid function: speech clarity. Speech in quiet scores just 1.9/5, and speech in noise drops to 1.0/5, both falling below category averages. Own-voice comfort is another weak point at 1.0/5, which is 1.51 points below the category average. Users may find their own voice sounds unnatural or boomy when wearing these devices. The tuned fit shows modest improvement over the initial fit (3.4/5 vs 3.1/5), primarily through better speech-in-quiet performance. The Linner Mars may appeal to budget-conscious consumers who prioritize music and media streaming over speech understanding. However, several competitors in the same price range—including the Elehear Beyond and Apple AirPods Pro 2—offer substantially better overall sound performance. Those seeking improved speech clarity should consider alternatives that score higher in that critical area.
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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