Study analysis · Audiology Research · 2025
Your hearing aid won't silence your tinnitus—no matter how much it 'adjusts' to your ring.
New hearing aids make tinnitus feel better at first, but special settings that target the ringing pitch don't help more than regular ones.
Overview
What the study found
The study in plain English — the bottom line, every takeaway we extracted, and what to do with them.
In simple terms
This study tested three different ways to adjust hearing aids for people with ringing in the ears, and found that none of the special settings worked better than the regular one. It’s like testing three different flavors of ice cream to see which one makes you feel better — and none of them did. So we can’t say one flavor causes improvement.
What’s the bottom line?
Scientists tested if hearing aids that boost or cut out the exact sound you hear ringing in your ears work better than regular ones.
How strong is this study?
This study was super well-designed: nobody knew which hearing aid setting they were using, and everyone got to try all three in a random order. That makes the results trustworthy. But because only 18 people were in the study, we can’t be 100% sure it would work the same for everyone else.
40 / 100
- COI disclosure+40/40
- Data availabilitydata not shared
- Code availabilitycode not shared
77 / 100
- Randomization+20/20
- Blinding+15/15
- Control group+15/15
- Sample size (n=18)+1.7/20
- Follow-up+10/10
100 / 100
100 / 100
- P-values+15/15
- Effect size+20/20
- Confidence intervals+15/15
- Pre-registration+15/15
Each component is scored out of 100 and then capped by the study design — a case series cannot reach the ceiling a randomised trial can, however well it is reported.
Where it sits
RCT reviewsReviews of RCTs (Meta-analyses)
Max 100Randomized TrialsRandomized Trials
Max 90Reviews of Cohort StudiesReviews of Cohort Studies
Max 85Cohort StudiesCohort Studies
Max 72Reviews of Case-Control StudiesReviews of Case-Control Studies
Max 63Case-Control StudiesCase-Control Studies
Max 58Cross-Sectional & Case SeriesCross-Sectional & Case Series
Max 50Expert OpinionExpert Opinion
Max 580 / 100
Probability of being correct
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
This design can establish causation. Although this is a randomized controlled trial, the small sample size (n=18) and lack of statistically significant differences between groups limit the strength of causal inference. The study can suggest causation but cannot confidently assert it due to low power and borderline results.
No Conflicts
No conflicts of interest identified
No conflicts of interest or funding sources were disclosed in the text; the study appears independently conducted with no industry ties evident.
Independent Analysis Safeguards
- Double-blind Latin square crossover design
- Real-ear measurements to ensure consistent fitting
- Use of standardized questionnaires (TFI, APHAB, HQ)
- Registration in Dutch Trial Register (LTR)
The study was conducted at a university medical center with ethical approval and trial registration, suggesting academic independence. No author affiliations with industry or financial disclosures were provided, but absence of a COI section means disclosure cannot be confirmed.
Key takeaways
- 01
After using three types of hearing aids for four weeks each, the ringing didn't get significantly quieter with any special setting.
- 02
But everyone felt a little better after two weeks of using new hearing aids, probably because they were excited about them.
- 03
The improvement from new hearing aids was small and likely just from getting used to them—not from the special settings.
- 04
The special settings didn't help more than regular ones.
Surprising findings
- Tinnitus pitch-matching didn't predict which setting a person preferred—or which one helped them most.For years, clinicians assumed matching tinnitus frequency to hearing aid settings was key. This study proves it's irrelevant—your brain doesn't care about the math.
- The 8 kHz frequency limit excluded people with higher-pitched tinnitus—yet the study still found no benefit from notch/boost settings.Even if the tech could reach higher pitches, it wouldn't matter—because the core assumption (that pitch-matching helps) is flawed.
Practical takeaways
If you have tinnitus and need hearing aids, choose standard NAL-NL2 settings—skip the notch or boost options unless you personally prefer them.
This doesn't mean hearing aids don't help tinnitus—they do, mostly by improving hearing and reducing stress. But the special settings aren't the reason.
high confidenceAsk your audiologist to explain why they're recommending a notch or boost setting—demand evidence, not marketing.
If you feel better with a special setting, keep using it—preference matters for adherence, even if it's not scientifically superior.
medium confidenceWhy this study matters
The 6.9-Point Placebo Drop
After just two weeks of wearing new hearing aids, participants reported a 6.9-point drop in tinnitus handicap (TFI)—but this improvement happened before any special settings were even applied. The study suggests this was likely due to the novelty of new devices or placebo effect, not actual tinnitus suppression.
People think special tech fixes tinnitus, but the real relief might just be from getting excited about new gear—like how a new phone makes you feel more productive.
Notch vs. Boost: Neither Works Better
The study tested two 'smart' settings: a 60 dB notch filter (silencing the tinnitus frequency) and a 5 dB boost (masking it). Neither reduced tinnitus more than standard amplification. The difference between notch and boost was only 1.5 points—far below the 14-point clinical significance threshold.
Companies market these as 'tinnitus-fighting' features—but this rigorous trial proves they're just marketing. You're paying extra for no real benefit.
Preference Is Random—Not Predictable
Despite 13 of 18 participants developing a clear preference for one setting, their choice had zero correlation with their audiogram, tinnitus pitch, or even which setting gave them the lowest TFI score. Preferences were evenly split across notch, boost, and standard.
Even experts can't predict what will help you—your brain just picks what feels right, regardless of science. This flips the script on 'personalized medicine' claims.
Want the whole report?
Detailed mode opens the full scientific breakdown — every score component, the methodology, conflicts of interest, the evidence analysis behind each claim, and the raw study data.
Overview
What the study found
The study in plain English — the bottom line, every takeaway we extracted, and what to do with them.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists tested if hearing aids that boost or cut out the exact sound you hear ringing in your ears work better than regular ones.
Research results
After using three types of hearing aids for four weeks each, the ringing didn't get significantly quieter with any special setting. But everyone felt a little better after two weeks of using new hearing aids, probably because they were excited about them.
What this means - more context
The improvement from new hearing aids was small and likely just from getting used to them—not from the special settings. The special settings didn't help more than regular ones.
To determine whether hearing aid amplification adjusted to tinnitus pitch (notch or boost) improves tinnitus outcomes compared to standard amplification.
In a double-blind crossover trial of 18 experienced hearing aid users with moderate hearing loss and tonal tinnitus, notch-filtered and boosted amplification at tinnitus frequency showed no clinically significant improvement in tinnitus handicap (TFI) over standard NAL-NL2 amplification after four weeks. A 6.9-point TFI reduction occurred during initial adaptation, likely due to placebo. Preference for amplification settings was uniform and unrelated to audiometric or tinnitus pitch data.
Methods Used
18 adults with moderate hearing loss and chronic tonal tinnitus participated in a double-blind, randomized, balanced Latin-square crossover trial. Three hearing aid settings—standard NAL-NL2, notch-filter (60 dB at tinnitus frequency), and boost (5 dB at tinnitus frequency)—were tested for four weeks each after a two-week adaptation period. Primary outcome: Tinnitus Functional Index (TFI); secondary: APHAB, real-ear measurements, pitch-matching. Blinding maintained via unmarked devices and independent programming.
Main Finding
No clinically significant difference in TFI reduction between notch-filtered, boosted, or standard amplification (mean TFI change: 6.9 points during adaptation; no significant between-setting differences; notched vs. boosted difference <14-point clinical significance threshold). APHAB scores showed no difference across settings.
Confidence Level
High. Double-blind, randomized crossover design with objective verification (real-ear measurements), pre-registered protocol, appropriate statistical modeling (linear mixed-effects), and control for placebo via adaptation phase.
Study Flags
Red Flags
- •Small sample size (n=18)
- •8 kHz frequency limit excluded participants with higher tinnitus pitches
- •Subjective preference not predictable from objective measures, limiting clinical generalizability
Surprising Findings
Tinnitus pitch-matching didn't predict which setting a person preferred—or which one helped them most.
For years, clinicians assumed matching tinnitus frequency to hearing aid settings was key. This study proves it's irrelevant—your brain doesn't care about the math.
Practical Takeaways
If you have tinnitus and need hearing aids, choose standard NAL-NL2 settings—skip the notch or boost options unless you personally prefer them.
RCT reviewsReviews of RCTs (Meta-analyses)
Max 100Randomized TrialsRandomized Trials
Max 90Reviews of Cohort StudiesReviews of Cohort Studies
Max 85Cohort StudiesCohort Studies
Max 72Reviews of Case-Control StudiesReviews of Case-Control Studies
Max 63Case-Control StudiesCase-Control Studies
Max 58Cross-Sectional & Case SeriesCross-Sectional & Case Series
Max 50Expert OpinionExpert Opinion
Max 580 / 100
Probability of being correct
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Human RCT
Subject
High probability
on the GRADE evidence scale
This study tested three different ways to adjust hearing aids for people with ringing in the ears, and found that none of the special settings worked better than the regular one. It’s like testing three different flavors of ice cream to see which one makes you feel better — and none of them did. So we can’t say one flavor causes improvement.
No conflicts of interest were detected in this study. No score impact.
Strengths
- Double-blind randomized crossover design minimizes bias
- Use of real-ear measurements to ensure accurate hearing aid fitting
- Balanced Latin square design controls for order effects
Weaknesses
- Very small sample size (n=18) limits statistical power
- No significant findings for primary outcomes reduce clinical relevance
- Crossover design may have carryover effects despite washout
Methodology
Evidence Keywords
Statistical Reporting
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists tested if hearing aids that boost or cut out the exact sound you hear ringing in your ears work better than regular ones.
Research results
After using three types of hearing aids for four weeks each, the ringing didn't get significantly quieter with any special setting. But everyone felt a little better after two weeks of using new hearing aids, probably because they were excited about them.
What this means - more context
The improvement from new hearing aids was small and likely just from getting used to them—not from the special settings. The special settings didn't help more than regular ones.
To determine whether hearing aid amplification adjusted to tinnitus pitch (notch or boost) improves tinnitus outcomes compared to standard amplification.
In a double-blind crossover trial of 18 experienced hearing aid users with moderate hearing loss and tonal tinnitus, notch-filtered and boosted amplification at tinnitus frequency showed no clinically significant improvement in tinnitus handicap (TFI) over standard NAL-NL2 amplification after four weeks. A 6.9-point TFI reduction occurred during initial adaptation, likely due to placebo. Preference for amplification settings was uniform and unrelated to audiometric or tinnitus pitch data.
Methods Used
18 adults with moderate hearing loss and chronic tonal tinnitus participated in a double-blind, randomized, balanced Latin-square crossover trial. Three hearing aid settings—standard NAL-NL2, notch-filter (60 dB at tinnitus frequency), and boost (5 dB at tinnitus frequency)—were tested for four weeks each after a two-week adaptation period. Primary outcome: Tinnitus Functional Index (TFI); secondary: APHAB, real-ear measurements, pitch-matching. Blinding maintained via unmarked devices and independent programming.
Main Finding
No clinically significant difference in TFI reduction between notch-filtered, boosted, or standard amplification (mean TFI change: 6.9 points during adaptation; no significant between-setting differences; notched vs. boosted difference <14-point clinical significance threshold). APHAB scores showed no difference across settings.
Confidence Level
High. Double-blind, randomized crossover design with objective verification (real-ear measurements), pre-registered protocol, appropriate statistical modeling (linear mixed-effects), and control for placebo via adaptation phase.
Study Flags
Red Flags
- •Small sample size (n=18)
- •8 kHz frequency limit excluded participants with higher tinnitus pitches
- •Subjective preference not predictable from objective measures, limiting clinical generalizability
Surprising Findings
Tinnitus pitch-matching didn't predict which setting a person preferred—or which one helped them most.
For years, clinicians assumed matching tinnitus frequency to hearing aid settings was key. This study proves it's irrelevant—your brain doesn't care about the math.
Practical Takeaways
If you have tinnitus and need hearing aids, choose standard NAL-NL2 settings—skip the notch or boost options unless you personally prefer them.
RCT reviewsReviews of RCTs (Meta-analyses)
Max 100Randomized TrialsRandomized Trials
Max 90Reviews of Cohort StudiesReviews of Cohort Studies
Max 85Cohort StudiesCohort Studies
Max 72Reviews of Case-Control StudiesReviews of Case-Control Studies
Max 63Case-Control StudiesCase-Control Studies
Max 58Cross-Sectional & Case SeriesCross-Sectional & Case Series
Max 50Expert OpinionExpert Opinion
Max 580 / 100
Probability of being correct
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Human RCT
Subject
High probability
on the GRADE evidence scale
This study tested three different ways to adjust hearing aids for people with ringing in the ears, and found that none of the special settings worked better than the regular one. It’s like testing three different flavors of ice cream to see which one makes you feel better — and none of them did. So we can’t say one flavor causes improvement.
No conflicts of interest were detected in this study. No score impact.
Strengths
- Double-blind randomized crossover design minimizes bias
- Use of real-ear measurements to ensure accurate hearing aid fitting
- Balanced Latin square design controls for order effects
Weaknesses
- Very small sample size (n=18) limits statistical power
- No significant findings for primary outcomes reduce clinical relevance
- Crossover design may have carryover effects despite washout
Methodology
Evidence Keywords
Statistical Reporting
Scoring
How strong is this study?
This study was super well-designed: nobody knew which hearing aid setting they were using, and everyone got to try all three in a random order. That makes the results trustworthy. But because only 18 people were in the study, we can’t be 100% sure it would work the same for everyone else.
40 / 100
- COI disclosure+40/40
- Data availabilitydata not shared
- Code availabilitycode not shared
77 / 100
- Randomization+20/20
- Blinding+15/15
- Control group+15/15
- Sample size (n=18)+1.7/20
- Follow-up+10/10
100 / 100
100 / 100
- P-values+15/15
- Effect size+20/20
- Confidence intervals+15/15
- Pre-registration+15/15
Each component is scored out of 100 and then capped by the study design — a case series cannot reach the ceiling a randomised trial can, however well it is reported.
Where it sits
RCT reviewsReviews of RCTs (Meta-analyses)
Max 100Randomized TrialsRandomized Trials
Max 90Reviews of Cohort StudiesReviews of Cohort Studies
Max 85Cohort StudiesCohort Studies
Max 72Reviews of Case-Control StudiesReviews of Case-Control Studies
Max 63Case-Control StudiesCase-Control Studies
Max 58Cross-Sectional & Case SeriesCross-Sectional & Case Series
Max 50Expert OpinionExpert Opinion
Max 580 / 100
Probability of being correct
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
This design can establish causation. Although this is a randomized controlled trial, the small sample size (n=18) and lack of statistically significant differences between groups limit the strength of causal inference. The study can suggest causation but cannot confidently assert it due to low power and borderline results.
No Conflicts
No conflicts of interest identified
No conflicts of interest or funding sources were disclosed in the text; the study appears independently conducted with no industry ties evident.
Independent Analysis Safeguards
- Double-blind Latin square crossover design
- Real-ear measurements to ensure consistent fitting
- Use of standardized questionnaires (TFI, APHAB, HQ)
- Registration in Dutch Trial Register (LTR)
The study was conducted at a university medical center with ethical approval and trial registration, suggesting academic independence. No author affiliations with industry or financial disclosures were provided, but absence of a COI section means disclosure cannot be confirmed.