Phonak Sphere Infinio Ultra vs Signia Active Mini IX

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.

The Signia Active Mini IX is a premium prescription hearing aid with a visible-in-ear style, priced at $4,696. In HearAdvisor's lab testing, it achieved an A grade with a SoundScore of 4.5/5, ranking #13 among 36 prescription hearing aids tested. This device demonstrates strong speech performance in our testing framework. Speech in quiet scored 4.1/5, which is 0.79 points above the category average—a notable strength for everyday conversations. Speech in noise measured 2.6/5, above the category average by 0.61 points, though only mixed in absolute terms, suggesting challenging listening environments may still require effort. Music streaming is a standout feature, scoring 3.6/5—nearly a full point (0.96) above the prescription hearing aid average. Own-voice comfort also performed well at 3.2/5, 0.45 points above average. However, feedback handling scored 2.5/5, which is 2.21 points below the category average, indicating this device may be more prone to feedback issues compared to typical prescription aids. The Active Mini IX suits users prioritizing speech clarity and streaming quality through a discreet earbud-style design. Those particularly sensitive to feedback or requiring maximum stability during physical activity should weigh the feedback performance against the device's other strengths.