Phonak Sphere Infinio vs Resound Nexia

The Phonak Sphere Infinio is a premium behind-the-ear prescription hearing aid released in 2024, priced at $4,898. In our lab testing, it earned an A grade with a SoundScore of 5.0/5, placing it at #2 among 39 prescription hearing aids tested—within the top 3% of its category. The standout performance comes in speech clarity. Speech in noise scores an excellent 4.7/5, a remarkable 2.59 points above the category average of 2.11/5. Speech in quiet also impresses at 4.5/5, sitting 1.07 points above average. For anyone who struggles to follow conversations in restaurants, gatherings, or busy environments, this device delivers measurably superior intelligibility compared to most alternatives we've tested. Music streaming quality is strong at 4.0/5, exceeding the category average by 1.24 points—a meaningful advantage for users who value audio fidelity when streaming from phones. However, own-voice comfort is mixed at 2.3/5, falling 0.40 points below the category average, which may affect how natural your own speech sounds. Feedback handling, while solid in absolute terms at 3.6/5, sits 1.12 points below the category average of 4.72/5. The Sphere Infinio is best suited for users prioritizing exceptional speech understanding, particularly in challenging noise environments, and who are willing to invest at the premium tier. Those especially sensitive to own-voice quality or requiring maximum feedback stability may want to compare alternatives like the similarly-priced Oticon Intent or the lower-priced Phonak Audéo EON Sphere.

The Resound Nexia is a premium behind-the-ear prescription hearing aid released in 2023, currently available at $4,298. In HearAdvisor's lab testing, it earned a SoundScore of 4.0/5 and an A grade, ranking #28 of 39 prescription hearing aids tested. The Nexia demonstrates clear strengths in specific areas. Feedback handling is excellent at 5.0/5, scoring 0.28 points above the category average—users can expect stable performance without whistling during typical daily activities. Own-voice comfort also stands out at 3.6/5, a solid score that sits 0.90 points above average, suggesting wearers may find their own voice sounds more natural compared to many competitors. However, speech performance presents a more mixed picture. Speech in quiet measures 3.2/5—solid in absolute terms but 0.19 points below the category average. More notably, speech in noise scores just 1.0/5, falling 1.11 points below average. This represents a significant limitation for users who frequently encounter challenging listening environments like restaurants or group conversations. Music streaming scores 2.8/5, essentially matching the category average. At this price point, several alternatives deliver stronger overall performance. The Phonak Sphere Infinio, Oticon Intent, and Oticon Real all score notably higher while occupying the same premium tier. Budget-conscious buyers might also consider options like the Jabra Enhance Select 500 at a lower price point with competitive sound quality. The Nexia may be best suited for users who prioritize feedback stability and own-voice comfort over speech-in-noise performance.