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Expert
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Signia Styletto AX Expert Review

Premium RxReleased 2022
See Price at ZipHearing

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How We Test

The Signia Styletto AX is a premium prescription behind-the-ear hearing aid priced at $4,398. In HearAdvisor's lab testing, it earned an A grade with a SoundScore of 4.22/5, ranking #13 among 35 prescription hearing aids tested—placing it in the top 34% of its category.

Speech performance is a clear strength for the Styletto AX. Speech in quiet scores a strong 4.0/5, sitting 0.57 points above the category average. Speech in noise measures 2.2/5, which is above the category average by 0.67 points, though still mixed in absolute terms—a common challenge across prescription devices. Music streaming quality is solid at 3.1/5, outperforming the category average by 0.49 points.

Feedback handling is the notable weak point. At 3.9/5, it's solid in absolute terms but falls 0.84 points below the category average of 4.74/5. Own-voice comfort scores a solid 3.0/5, slightly above average for the category. The device features rechargeable batteries and iPhone streaming capability in its distinctive slim design.

At this price point, buyers should be aware that several competitors deliver higher overall scores. The Oticon Intent (4.70/5) and Phonak Sphere Infinio (4.64/5) both outperform the Styletto AX, as does Signia's own Active Pro IX (4.63/5) at a lower listed price. The Styletto AX may suit users who prioritize its sleek form factor and strong speech-in-quiet performance, but those seeking maximum value in the premium tier have alternatives worth considering.

Reliable & Repeatable Lab Results

Quality data starts with quality recordings. HearAdvisor worked with GRAS to build a no-compromise front end so every test is repeatable and reliable.

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Steve in HearAdvisor Lab
HearAdvisor Verdict
ATop 42% of Prescription Hearing Aid
Bottom Line

The Signia Styletto AX is a premium prescription aid with strong speech clarity in quiet settings, best for users prioritizing clear conversations.

Strengths
  • Strong speech in quiet performance4.0/5
  • Above-average speech in noise+0.67 vs category
  • Sleek rechargeable design with iPhone streaming
Drawbacks
  • Feedback handling below category average-0.84
  • Premium price point at $4,398
Lab Test Summary

In initial fit testing with sleeve vented coupling, the Signia Styletto AX achieved a normalized Initial Score of 4.2/5. Speech in quiet measured 3.7/5, while speech in noise scored 1.9/5. Feedback handling performed well at 4.2/5, and own-voice comfort was solid at 3.1/5. Music streaming quality came in at 3.0/5. These results reflect out-of-box performance with manufacturer first-fit settings, suggesting the Styletto AX delivers respectable performance even before professional adjustments.

What is HearAdvisor's Initial Fit?

The Initial Fit approximates the most likely settings and eartips for a typical moderate hearing loss. Results are measured across the same 72 acoustic scenes in our custom-built lab, then scored on a 5-star scale using an auditory model.

Lab Review Scores
A
SoundGrade
Initial Score
4.2
Tuned Score
4.3
Expert
Choice
Speech in quiet
best
3.7
5.0
Own voice
best
3.1
5.0
Speech in noise
best
1.9
5.0
Feedback handling
best
4.2
5.0
Music streaming
best
3.0
5.0

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Lab Recordings
Adjust volume to make "No hearing aids" as loud as it would be in the real world, without hearing aids. Remove hearing aids while auditioning. High-quality headphones will improve results!
Signia Styletto AX Lab
Lab Notes
Initial Fitting
Tuned Fitting
Ear Coupling
Initial Fitting
Sleeve Vented
Tuned Fitting
Sleeve Vented
Specs
Behind Ear
Behind Ear
Rechargeable Batteries
Rechargeable Batteries
iPhone Streaming
iPhone Streaming