Resound Nexia vs Signia Styletto AX
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.
Choice

Resound Nexia
The Resound Nexia is a premium behind-the-ear prescription hearing aid released in 2023, priced at $4,298. In HearAdvisor's lab testing, it earned an A grade with a SoundScore of 4.0/5, ranking #26 of 36 devices in the Prescription Hearing Aid category. The Nexia demonstrates clear strengths in specific performance areas. Feedback handling is excellent at 5.0/5, scoring 0.29 points above the category average—meaning users can expect reliable stability without whistling during typical daily activities. Own-voice comfort is also a highlight at 3.6/5, measuring 0.85 points above average, which may appeal to those bothered by their voice sounding hollow or boomy in other devices. However, the Nexia shows meaningful limitations in challenging listening environments. Speech in noise performance is low at 1.0/5, falling 0.96 points below the category average of 1.96/5. Speech in quiet scores 3.2/5—solid in absolute terms, though 0.11 points below the category average. Music streaming is mixed at 2.8/5, slightly above average but not a standout. At this price point, several alternatives in the same range deliver stronger overall performance, including the Phonak Sphere Infinio and Oticon Intent. The Nexia may be best suited for users who prioritize own-voice comfort and feedback-free performance over speech clarity in noisy environments, and who value the Resound ecosystem's connectivity features including iPhone and Android streaming with hands-free capability.
Choice

Signia Styletto AX
The Signia Styletto AX is a premium prescription behind-the-ear hearing aid released in 2022, priced at $4,398. In HearAdvisor's lab testing, it earns an A grade with a SoundScore of 4.3/5, ranking #19 among 36 prescription hearing aids tested. This device demonstrates strong speech-in-quiet performance at 4.0/5, scoring 0.71 points above the category average. Speech-in-noise shows mixed absolute results at 2.3/5, though this still sits 0.32 points above the category average of 1.96/5. Music streaming quality is solid at 3.1/5, exceeding the category average by 0.46 points—a meaningful advantage for users who frequently stream audio from their iPhone. Own-voice comfort scores a solid 3.0/5, slightly above category average. However, feedback handling at 3.9/5 falls 0.81 points below the category average of 4.71/5—solid in absolute terms but notably weaker than many prescription competitors in our testing. The Styletto AX has earned HearAdvisor's Expert's Choice Award in both 2023 and 2024. With its distinctive slim design, rechargeable batteries, and iPhone streaming capabilities, it may appeal to users prioritizing aesthetics and convenience alongside strong speech clarity in quieter environments. Those frequently in challenging noise situations or requiring maximum feedback stability may want to compare alternatives in this price tier.
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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