Phonak Sphere Infinio vs Signia Pure C&G IX

The Phonak Sphere Infinio is a premium behind-the-ear prescription hearing aid released in 2024, earning an A grade with a SoundScore of 4.6/5 in HearAdvisor's lab testing. Priced at $4,898, it ranks #2 among 36 tested prescription hearing aids, placing it in the top 3% of its category. In our testing, the Sphere Infinio demonstrated exceptional speech performance. Speech in noise scored 4.6/5, a full 3.05 points above the category average of 1.55/5—a standout result that sets this device apart from most competitors. Speech in quiet also excelled at 4.8/5, landing 1.37 points above average. These results suggest the Sphere Infinio may be particularly well-suited for users who prioritize understanding conversation in challenging listening environments like restaurants or group gatherings. Music streaming performance is strong at 4.0/5, sitting 1.36 points above the category average. The device supports both iPhone and Android streaming and features rechargeable batteries. However, own-voice comfort scored 2.3/5, which is mixed in absolute terms and 0.45 points below average. Feedback handling scored a solid 3.6/5 in absolute terms, though this falls 1.11 points below the category average of 4.71/5. The Sphere Infinio competes directly with other premium options like the Oticon Intent (4.75/5) and Signia Active Pro IX (4.61/5). Its exceptional speech-in-noise performance makes it a compelling choice for users who frequently encounter noisy environments, though those sensitive to own-voice quality or feedback stability may want to discuss these tradeoffs with their hearing care provider.

The Signia Pure C&G IX is a premium prescription behind-the-ear hearing aid released in 2023, currently available at $3,298. In HearAdvisor's lab testing, it earns an A grade with a SoundScore of 4.0/5, placing it in the top 50% of prescription hearing aids tested. Speech performance is a notable strength. Speech in quiet scores a strong 4.1/5, which is +0.67 points above the category average of 3.43/5. Speech in noise scores 2.3/5—above the category average of 1.55/5 by +0.75 points, though still mixed in absolute terms. This pattern is common in the prescription category, where challenging noise environments remain difficult for most devices. Feedback handling is excellent at 5.0/5, scoring +0.29 points above the already-high category average. Own-voice comfort comes in at a solid 3.2/5, which is +0.45 points above average. Music streaming scores 3.0/5, a solid result that sits +0.36 points above category norms. Professional fitting makes a meaningful difference with this device. The normalized Initial Score of 3.8/5 improves to 4.5/5 after tuning—a +0.7 point gain that reflects substantial speech clarity improvements when properly configured. The Pure C&G IX includes rechargeable batteries and streaming compatibility with both iPhone and Android devices, plus hands-free calling capability. It's well-suited for users who prioritize speech clarity and can work with a hearing care professional to optimize their fitting.