HearAdvisor's independent lab evaluation of the Signia Styletto C&G IX measures speech clarity, noise performance, own-voice comfort, streaming quality, and feedback control. Below you'll find our complete test results with audio samples and amplification measurements.
Dr. Steve Taddei, Au.D. — Lab Director & Reviewer
Dr. Abram Bailey, Au.D. — Fact Checker / Editor
The Signia Styletto C&G IX delivers strong overall sound quality with standout own-voice naturalness, best for users prioritizing comfort with their own speech.
Top 24% of Prescription Hearing AidThe distribution curves below show where this device falls for speech in quiet, speech in noise, own-voice comfort, music streaming, and feedback control. The purple SoundScore graph is the overall result, and the five graphs after it break it into individual measurements for the selected fit. Each curve shows how scores are spread across all tested hearing aids, and the dot and number mark the score for Signia Styletto C&G IX.
Every hearing aid is lab-tested in two states — as it sounds out of the box, and after professional tuning. Switch fits to update the five metric graphs below.
How clearly speech comes through in calm, one-on-one surroundings.
Speech understanding against loud background noise — the toughest everyday test.
How natural your own voice sounds while wearing the aids, without a boomy, plugged-up quality.
Sound quality of music streamed to the hearing aids over Bluetooth.
Resistance to the whistling and squealing caused by acoustic feedback.
Lab Assessment
Quality data starts with quality recordings. HearAdvisor worked with GRAS to build a no-compromise front end so every test is repeatable and reliable.
Amplification Analysis
The graph below displays measured insertion gain across frequencies compared to prescriptive targets. This visualization shows how closely the device's amplification matches the fitting formula used during testing.
Audio Samples
These audio samples were captured through an acoustic test manikin under standardized lab conditions. A reference recording without amplification is included for direct comparison.
How this hearing aid sounds in our lab scenes. Compare it out of the box and after professional tuning.
Scene type: Conversation
164 lab recordings of this product. They demonstrate relative processing in our lab and cannot predict an individual fitting outcome.
Test Documentation
Our technicians documented observations for both Initial and Tuned fit conditions during testing. Below you'll find notes on the fitting process along with the specific test configuration used in our measurements.
In our initial fit evaluation using sleeve vented coupling, the Styletto C&G IX achieved a normalized score of 4.6/5. Speech in quiet measured 3.8/5, with speech in noise at 2.8/5. Feedback handling was strong at 4.6/5, while own-voice comfort scored 3.7/5. Music streaming came in at 2.7/5. This initial configuration demonstrates good out-of-box performance, particularly for feedback stability and conversational speech clarity.
After professional tuning with the same sleeve vented coupling, the normalized score measured 4.5/5—a slight decrease of 0.1 points from initial fit. Speech in quiet improved marginally to 3.9/5, while speech in noise decreased to 2.5/5. Feedback handling dropped to 3.6/5, though music streaming improved to 3.1/5. Own-voice comfort remained steady at 3.7/5. The tuned fit shows trade-offs between metrics rather than uniform improvement.
Initial Fitting | Tuned Fitting | |
|---|---|---|
| Ear Coupling | Sleeve Vented | Sleeve Vented |
