Eargo SE vs Phonak Audéo EON Sphere
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.

Eargo SE
The Eargo SE is a premium-priced OTC hearing aid ($1,699) featuring an invisible-in-ear design. In our lab testing, it earned a B grade with a SoundScore of 3.2/5, placing it in the top 85% of the OTC hearing aid category—ranking #56 of 65 devices tested. Speech performance presents a mixed picture. The Eargo SE scores 3.2/5 for speech in quiet, a solid result that sits 0.43 points above the category average. However, speech in noise performance is low at 1.3/5, falling 0.23 points below average. Feedback handling is excellent at 4.6/5, slightly above the category average, meaning users can expect stable performance without whistling issues during normal use. The most significant limitation is music streaming, which scores 0.0/5—nearly 2 points below the category average. Users who prioritize streaming audio from their phones should be aware of this substantial weakness. Own-voice comfort scores a mixed 2.4/5, just slightly below the category average. At its premium price point, the Eargo SE faces stiff competition. Several OTC alternatives deliver comparable or better sound performance at lower prices. The invisible-in-ear form factor is the Eargo SE's primary differentiator, appealing to users who prioritize cosmetic discretion. Those who value the nearly invisible design and primarily need help with speech in quieter environments may find the Eargo SE suitable, but buyers seeking balanced performance across streaming and challenging listening situations should explore alternatives.
Choice

Phonak Audéo EON Sphere
The Phonak Audéo EON Sphere is a premium behind-the-ear prescription hearing aid priced at $4,398. In HearAdvisor's lab testing, it earned a SoundScore of 5.0/5 and an A grade, placing it among the top performers in the prescription hearing aid category. Speech performance stands out as this device's greatest strength. Speech in noise scored an excellent 4.5/5, a full 2.53 points above the category average of 1.96/5—a substantial margin that makes this one of the strongest performers in challenging listening environments. Speech in quiet also performed well at 4.3/5, nearly a full point above the category average. These results suggest the Audéo EON Sphere may be particularly well-suited for users who frequently encounter noisy social settings or group conversations. Music streaming delivered a solid 3.7/5, more than a point above the category average of 2.64/5, indicating above-average audio fidelity for phone-streamed content. Own-voice comfort scored 2.8/5, which sits just above the category average but reflects mixed absolute performance—users sensitive to occlusion effects should discuss this with their hearing care provider. Feedback handling scored an excellent 4.6/5 in absolute terms, though it lands slightly below the category average of 4.71/5. The Audéo EON Sphere represents Phonak's latest premium technology and delivers strong results across most metrics in our standardized testing. It's best suited for users prioritizing speech clarity in difficult listening situations who are prepared for the premium price point.
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