MDHearing Neo XS 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.

MDHearing Neo XS
The MDHearing Neo XS is a budget-priced OTC hearing aid in the invisible-in-ear style, available for $397. In HearAdvisor lab testing, it earned a C grade with a SoundScore of 2.9/5, ranking #63 of 65 OTC hearing aids tested. Performance results reveal a mixed profile. The Neo XS shows strength in own-voice comfort, scoring 3.2/5—0.69 points above the category average—meaning wearers may experience less of the "boomy" quality that can accompany hearing aid use. Feedback handling is excellent at 5.0/5, sitting 0.46 points above average, so users should experience stable performance without whistling during typical wear. However, speech clarity is a significant limitation. Speech in quiet scores just 1.0/5, falling 1.77 points below the OTC category average. Speech in noise also scores 1.0/5, 0.48 points below average. Music streaming scored 0.0/5, which is 1.92 points below the category average—this device is not suited for audio entertainment. At this price point, several alternatives offer notably stronger performance. The Elehear Beyond (4.36/5), Apple AirPods Pro 2 (4.06/5), and Zepp Clarity Omni (3.88/5) all deliver better overall sound quality in the same price range. The Neo XS may appeal to those prioritizing own-voice comfort and feedback stability over speech intelligibility, but most users seeking meaningful hearing benefit should consider higher-scoring options.
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