Signia Styletto C&G IX vs Starkey Evolv AI
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.
Choice

Signia Styletto C&G IX
The Signia Styletto C&G IX is a premium prescription behind-the-ear hearing aid released in 2024, priced at $3,398. In HearAdvisor's lab testing, it earned an A grade with a SoundScore of 4.6/5, placing it in the top 25% of prescription hearing aids and ranking #10 of 36 devices in its category. This device demonstrates strong performance across most sound quality metrics in our testing. Speech in quiet scored 3.9/5, which is 0.62 points above the category average of 3.32/5. Speech in noise came in at 2.5/5—above the category average by 0.58 points, though only mixed in absolute terms. Own-voice comfort was a particular strength at 3.7/5, exceeding the category average by 0.95 points. Music streaming quality scored a solid 3.1/5, sitting 0.46 points above the category average. However, feedback handling measured 3.6/5, which while solid in absolute terms, falls 1.11 points below the category average of 4.71/5. This represents the device's primary weakness relative to competitors. The Styletto C&G IX features rechargeable batteries, iPhone and Android streaming, and hands-free calling capability. It has earned HearAdvisor's Expert's Choice Award in both 2023 and 2024. Consumers seeking similar sound performance at lower prices may want to compare the Rexton Reach R-Li T80 at Costco or the Lexie B2 Plus. This device is best suited for those prioritizing speech clarity and own-voice comfort who can accept slightly below-average feedback performance.

Starkey Evolv AI
The Starkey Evolv AI is a premium behind-the-ear prescription hearing aid released in 2022, currently available at $4,598. In HearAdvisor's lab testing, it earned a B grade with a SoundScore of 3.9/5, ranking #28 of 36 prescription hearing aids tested. This device shows notable strengths in specific performance areas. Music streaming quality stands out at 3.7/5, scoring 1.06 points above the category average—making it a solid choice for users who prioritize audio entertainment. Speech in noise performance reaches 2.8/5, which is 0.81 points above the category average, though the absolute score reflects mixed real-world performance in challenging listening environments. Speech in quiet is solid at 3.4/5, slightly above average. The Evolv AI does show weaknesses in two key areas. Own voice comfort scores 2.1/5, falling 0.65 points below the category average, which may affect how natural your own speech sounds. Feedback handling, while solid in absolute terms at 3.5/5, runs 1.21 points below the category average of 4.71/5—meaning competitors in this price tier generally offer better feedback suppression. At this premium price point, several alternatives deliver stronger overall performance, including the Phonak Sphere Infinio and Oticon Intent. However, the Evolv AI's Expert's Choice Award recognition in 2023 and 2024 reflects its practical strengths. This hearing aid may suit users who prioritize music streaming quality and improved speech understanding in noise over own-voice comfort, and who value Starkey's feature set including rechargeable batteries and hands-free calling for both iPhone and Android.
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Performance metrics
Scale 1-5 (Tuned)
Lab metric by fit
Scale 1-5 (Tuned)
Speech level
Adjust input dB (Tuned)
Amplification (REIG)
Insertion gain at 65 dB (Tuned)
Fitting configuration for tuned fit