Phonak Audéo EON Sphere vs Phonak Audeo R Infinio 90

The Phonak Audéo EON Sphere is a premium behind-the-ear prescription hearing aid that achieved the top ranking among 39 prescription hearing aids in HearAdvisor's lab testing, earning an A grade with a SoundScore of 5.0/5. In our testing, this device demonstrated exceptional speech clarity performance. Speech-in-noise scored 4.5/5, a strong result that sits 2.38 points above the category average—the standout metric for this product. Speech-in-quiet also performed well at 4.3/5, measuring 0.88 points above average. Music streaming quality was solid at 3.7/5, nearly a full point above the category average of 2.76/5. Feedback handling scored an excellent 4.6/5 in absolute terms, though this falls slightly below the category average by 0.12 points, reflecting the strong feedback management across prescription devices generally. Own-voice comfort measured 2.8/5, which is above the category average but mixed in absolute terms—a consideration for users sensitive to the sound of their own voice. At $4,598, the Phonak Audéo EON Sphere sits in the premium tier of prescription hearing aids. The device is best suited for users who prioritize speech understanding in challenging listening environments and want top-tier performance from their initial fitting. Those seeking similar sound quality at a lower price point may want to consider alternatives like the Phonak Sphere Infinio.

The Phonak Audeo R Infinio 90 is a premium prescription behind-the-ear hearing aid released in 2024, priced at $4,996. In our lab testing, it earned an A grade with a SoundScore of 4.4/5, ranking #18 among 39 prescription hearing aids tested. Speech clarity is a standout strength in our testing. Speech in quiet scored 4.4/5, a strong result that sits 1.01 points above the category average. Speech in noise performance is more mixed at 2.5/5—above the category average by 0.37 points, but only moderate in absolute terms. This pattern suggests the Infinio 90 excels in calmer listening environments while offering incremental benefits in challenging noise. Streaming music quality impressed at 4.0/5, a strong score that lands 1.24 points above category average. Feedback handling scored 4.2/5, which is strong in absolute terms though 0.52 points below the category average. Own-voice comfort was mixed at 2.2/5, falling 0.50 points below average—something to discuss with your hearing care provider if natural voice quality is a priority. The Infinio 90 competes in a crowded premium segment. At this price point, alternatives like the Phonak Sphere Infinio (4.98/5) and Oticon Intent (4.83/5) achieved higher overall scores in our testing. Buyers seeking Phonak's ecosystem and strong speech-in-quiet performance may find the Infinio 90 appealing, though those prioritizing noise performance or own-voice comfort should compare options carefully with their provider.