Eargo 5 vs Phonak Sphere Infinio Ultra

The Eargo 5 is a premium-priced OTC hearing aid ($1,450) featuring an invisible-in-ear design with rechargeable batteries. In our lab testing, it earned a B grade with a SoundScore of 3.6/5, placing it in the top 52% of the OTC hearing aid category. This device demonstrates solid performance for speech understanding in quiet environments, scoring 3.5/5—0.75 points above the category average of 2.79/5. Own-voice comfort also measures above average at 2.8/5 (+0.29 vs category), though this remains mixed in absolute terms. Feedback handling is strong at 4.2/5, providing reliable stability during wear. However, the Eargo 5 shows notable limitations in other areas. Speech in noise performance is low at 1.4/5, slightly below the category average. Most significantly, music streaming scored 0.0/5, falling 1.92 points below the category average—this device does not support audio streaming functionality. The invisible-in-ear form factor appeals to users prioritizing discretion, and the closed sleeve coupling remains consistent between initial and tuned fits. Tuning provided modest improvement, moving from a normalized Initial Score of 3.5/5 to a Tuned Score of 3.7/5. Given its premium price point, consumers may want to compare against alternatives like the Sony CRE-C10 or Nuance Audio Glasses, which offer similar or better sound performance at lower price points. The Eargo 5 is best suited for users who prioritize cosmetic discretion and primarily need help with speech in quieter settings.

The Phonak Sphere Infinio Ultra is a premium behind-the-ear prescription hearing aid priced at $4,898. In HearAdvisor's lab testing, it earned an A grade with a SoundScore of 4.9/5, placing it in the top 5% of the 39 prescription hearing aids tested and ranking #3 in the category. This device demonstrates exceptional speech performance in our testing. Speech in noise scored 4.5/5—an excellent result that measures 2.40 points above the category average of 2.11/5. Speech in quiet also performed strongly at 4.3/5, which is 0.92 points above the category average. These results suggest the Sphere Infinio Ultra may particularly benefit users who frequently navigate challenging listening environments like restaurants or group conversations. Music streaming delivered a solid 3.3/5, measuring 0.54 points above category average. Own-voice comfort scored 2.8/5, which is above the category average by 0.10 points but remains mixed in absolute terms. Feedback handling measured 4.2/5—strong in absolute terms, though 0.52 points below the category average of 4.72/5. The Sphere Infinio Ultra is best suited for users seeking top-tier speech clarity who prioritize performance in noisy environments and are prepared to invest at the premium price tier. Those seeking similar sound quality at a lower price point may also consider the Phonak Sphere Infinio, which scored 4.98/5 in our testing.