Audien Atom X vs Phonak Sphere Infinio
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.

Audien Atom X
The Audien Atom X is a budget-priced OTC hearing aid available for $389, earning a B grade with a SoundScore of 3.3/5 in our lab testing. This visible-in-ear style device ranks #54 of 65 OTC hearing aids tested, placing it in the lower portion of the category. In our testing, the Atom X showed a mixed performance profile with notable strengths and weaknesses. Feedback handling was excellent at 5.0/5, scoring 0.46 points above the category average—meaning users are unlikely to experience whistling during normal wear. Music streaming was also a highlight at 3.3/5, coming in 1.38 points above the OTC average, making it a solid choice for those who prioritize audio entertainment. However, speech clarity showed limitations. Speech in quiet scored 1.5/5, falling 1.25 points below the category average, while speech in noise measured 1.0/5, which is 0.48 points below average. These low absolute scores suggest users may find speech understanding challenging, particularly in difficult listening environments. Own voice comfort was mixed at 2.3/5, slightly below the category average. The Atom X may appeal to budget-conscious consumers who prioritize streaming quality and feedback-free wear over speech enhancement. However, several competitors in the same price range—including the Elehear Beyond (4.36/5) and Apple AirPods Pro 2 (4.06/5)—offer stronger overall performance. Shoppers focused primarily on speech clarity may want to explore alternatives.
Choice

Phonak Sphere Infinio
The Phonak Sphere Infinio is a premium prescription behind-the-ear hearing aid released in 2024, priced at $4,898. In HearAdvisor's lab testing, it achieved a SoundScore of 5.0/5 and an A grade, ranking #1 among 36 prescription hearing aids tested. This device delivers exceptional speech performance, particularly in challenging listening environments. Speech in noise scored an excellent 4.7/5, measuring 2.74 points above the category average—a substantial margin that sets it apart from competitors. Speech in quiet also performed strongly at 4.5/5, sitting 1.15 points above average. Music streaming earned a strong 4.0/5, exceeding the category average by 1.36 points. The Sphere Infinio does show some trade-offs. Feedback handling scored a solid 3.6/5 in absolute terms, though this falls 1.11 points below the category average of 4.71/5. Own-voice comfort scored a mixed 2.3/5, slightly below the category average. These are areas where some competing premium devices perform better. This hearing aid is best suited for those who prioritize speech clarity, especially in noisy environments like restaurants or social gatherings. The behind-the-ear style offers rechargeable batteries and streaming compatibility with both iPhone and Android devices. Among premium-priced competitors like the Oticon Intent (4.85/5) and Oticon Real (4.75/5), the Sphere Infinio leads in overall sound performance, earning HearAdvisor's Expert's Choice Award for 2024 and 2023.
We independently review each item we recommend and appreciate your trust and support. When you buy through our links, we may earn a commission. Learn More.
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