HearAdvisor's independent lab review of the Sennheiser All Day Clear measures how this mid-priced OTC hearing aid performs across speech clarity, noise handling, streaming quality, and more. Below you will find our complete test results and audio samples.
Dr. Steve Taddei, Au.D. — Lab Director & Reviewer
Dr. Abram Bailey, Au.D. — Fact Checker / Editor
The Sennheiser All Day Clear delivers strong speech clarity and excellent feedback control, making it a solid mid-priced choice for everyday listening.
Top 8% of OTC Hearing AidThe score card below reports five lab-measured metrics for the All Day Clear: speech in quiet, speech in noise, own voice, music streaming, and feedback control. Each metric is rated on a scale from zero to five. 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 Sennheiser All Day Clear.
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.
Overall 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 Data
The graph below displays real-ear insertion gain measured on our test manikin. It shows how closely the Sennheiser All Day Clear matches prescriptive amplification targets across the frequency range.
Audio Samples
Below you can listen to audio samples captured through the All Day Clear on our acoustic manikin. 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
156 lab recordings of this product. They demonstrate relative processing in our lab and cannot predict an individual fitting outcome.
Test Configuration
The lab notes below document the specific settings, software versions, and test conditions used during our evaluation of the Sennheiser All Day Clear. This information supports the reproducibility of our measurements.
The Initial Fit uses a closed vented dome with the standard receiver and achieves a normalized score of 4.5/5. Out of the box, speech in quiet performs strongly at 4.1/5, while feedback handling is excellent at 5.0/5. Music streaming quality is solid at 3.4/5. Speech in noise remains limited at 1.9/5, and own voice comfort is mixed at 2.5/5. The proprietary manufacturer default fitting delivers competitive results without professional adjustment.
The Tuned Fit maintains the same closed vented dome and standard receiver configuration, achieving a normalized score of 4.4/5. Performance remains stable across metrics: speech in quiet at 4.0/5, speech in noise at 1.9/5, and feedback handling at a perfect 5.0/5. Music streaming measures 3.3/5 and own voice stays at 2.5/5. The minimal change from Initial to Tuned suggests the device performs well with its default settings.
Initial Fitting | Tuned Fitting | |
|---|---|---|
| Ear Coupling | Closed Vented Dome | Closed Vented Dome |
| Receiver | Standard | Standard |
| Fitting Formula | Proprietary manufacturer default | Proprietary manufacturer default |
| Listening Program | Automatic | Automatic |
| Volume Setting | Manufacturer default | -4 |
| Software Version | Unknown | Unknown |
| Tuning Adjustments | Sound Customization Volume at 6/7 and Sound Clarity at 4/6, Other settings at manufacturer defaults | 3-Band EQ adjusted (Bass - 5, Mid - 4, Treble - 4), Other settings and manufacturer defaults |
