Hear.com Horizon Go IX vs Phonak Sphere Infinio Ultra

The Hear.com Horizon Go IX is a premium prescription behind-the-ear hearing aid released in 2024, listed at $6,500. In HearAdvisor's lab testing, it earned an A grade with a SoundScore of 4.4/5, ranking #17 among 36 prescription hearing aids tested. This device demonstrates particular strength in speech clarity. Speech in quiet scored a strong 4.0/5, which is +0.72 points above the category average. Speech in noise performance also exceeded the category average by +0.61 points, though at 2.6/5 the absolute score remains mixed—meaning it handles challenging listening environments better than many competitors but still has room for improvement in demanding situations. The most notable limitation is own-voice comfort, scoring 1.8/5—a low result that falls 0.95 points below the category average. Users sensitive to how their own voice sounds may find this particularly noticeable. Feedback handling is strong in absolute terms at 4.4/5, though it sits slightly below the category average by 0.31 points. Music streaming performance is mixed at 2.7/5, essentially matching the category average. At this price point, the Horizon Go IX faces stiff competition. Same-price alternatives like the Phonak Sphere Infinio (5.0/5) and Oticon Intent (4.85/5) deliver higher overall sound performance. Budget-conscious shoppers might also consider options like the Rexton Reach R-Li T80 at Costco, which achieves a higher score at a lower price. The Horizon Go IX is best suited for those prioritizing speech clarity who can accept the own-voice trade-off and prefer the hear.com service model.

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 3% of the 36 prescription hearing aids tested and ranking #2 in its category. This device delivers exceptional speech performance in our testing. Speech in noise scored an excellent 4.5/5, a remarkable 2.55 points above the category average of 1.96/5—one of the largest margins we've measured in this critical metric. Speech in quiet also performed strongly at 4.3/5, exceeding the category average by 1.00 point. These results suggest the Sphere Infinio Ultra prioritizes speech clarity across challenging listening environments. Music streaming quality is solid at 3.3/5, sitting 0.66 points above the category average. Own voice comfort scored 2.8/5, which is above the category average but remains mixed in absolute terms—listeners sensitive to occlusion may notice this limitation. Feedback handling measured 4.2/5, which is strong in absolute terms though 0.51 points below the category average of 4.71/5. The Sphere Infinio Ultra is best suited for users who prioritize speech understanding, particularly in noisy environments, and who are prepared to invest in premium technology. Those seeking the highest feedback stability or improved own-voice comfort may want to compare alternatives, though this device's speech performance stands out as a category leader.