Phonak Sphere Infinio Ultra vs Starkey Genesis AI

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.

The Starkey Genesis AI is a premium behind-the-ear prescription hearing aid released in 2023, priced at $4,798. In HearAdvisor's lab testing, it earned a B grade with a SoundScore of 3.7/5, ranking #33 of 39 prescription hearing aids tested. In our testing, the Genesis AI demonstrated excellent feedback handling, scoring a perfect 5.0/5—0.28 points above the category average. This makes it exceptionally stable during movement and physical activities. Speech in quiet performance is solid at 3.5/5, sitting 0.05 points above the category average. Speech in noise scores 2.3/5, which is 0.21 points above the category average but remains mixed in absolute terms. Own-voice comfort is a weaker area, scoring 2.2/5—0.50 points below the category average. Users sensitive to the sound of their own voice may notice this limitation. Music streaming quality is mixed at 2.8/5, essentially matching the category average with a +0.04 point difference. The Genesis AI shows meaningful improvement with professional tuning, with the normalized score rising from 3.5/5 at initial fit to 4.2/5 when tuned—a 0.8-point gain. The device offers rechargeable batteries and streaming compatibility with both iPhone and Android, plus hands-free functionality. However, at this premium price point, several competitors in the same range deliver notably higher sound performance scores, which prospective buyers should consider when evaluating options.