TRT pairs counselling with low-level background sound to help the brain stop noticing tinnitus; it helps, but a 2025 review of 15 trials found it no better than any of seven comparators, including usual care.
Tinnitus Retraining Therapy, usually shortened to TRT, is built around a specific idea: the goal isn't to make the tinnitus quieter, it's to get the brain to stop treating it as something worth paying attention to. That's a different target from sound therapy alone, and it changes what the program looks like.
Where TRT comes from
TRT was developed by Pawel Jastreboff, building on what he called the neurophysiological model of tinnitus, first published in 1990. The model's central claim is that clinically significant tinnitus — tinnitus bothersome enough that someone seeks treatment for it — isn't primarily an auditory problem at that point. The auditory system is necessary for detecting the tinnitus signal, but the model holds that the limbic system (emotional processing) and autonomic nervous system (the body's stress response) are what actually drive the negative reactions that make tinnitus distressing, and that these systems can form a learned, reinforced connection to the tinnitus signal over time — similar in principle to a conditioned reflex. TRT's dual approach (counseling plus sound) is designed specifically to target that learned connection, aiming to "extinguish" it rather than treating tinnitus as a purely auditory symptom to mask or suppress.
TRT protocols also typically sort patients into categories based on the specific combination of tinnitus severity and any accompanying hyperacusis (sound sensitivity), since the model holds that these two conditions — while often co-occurring — involve somewhat different mechanisms and may need different sound therapy intensity and counseling emphasis. This categorization is part of why a proper TRT program is individualized by a trained clinician rather than a single fixed protocol applied the same way to everyone.
The two components
TRT pairs two things delivered together, not separately:
Directive counseling. Structured sessions explaining the neurophysiological model behind tinnitus — that it's a signal the auditory and limbic systems have learned to flag as threatening or important, and that this learned reaction, not the sound itself, is what can be unlearned. The goal is to reduce the emotional charge attached to hearing it.
Sound therapy. Low-level, broadband background sound worn for extended periods — historically many hours a day — set just below the level of the tinnitus rather than masking it outright. The idea is to reduce the contrast between the tinnitus and silence, which is thought to help the auditory system stop amplifying that frequency range over time.
What "habituation" means here
TRT's stated goal is habituation: reaching a point where the tinnitus is still physically present but no longer consciously noticed most of the time, the way you stop noticing the hum of a refrigerator. That's a meaningfully different endpoint than "the sound gets quieter," and it's worth going in with that expectation set correctly — full TRT protocols are also a real time commitment, historically prescribed as several hours of daily sound exposure sustained over one to two years.
What the evidence shows
The picture is genuinely mixed, and worth stating plainly rather than oversold:
- Systematic reviews describe the underlying evidence for TRT as encouraging but limited by study quality — several reviews note a high risk of bias in the available trials, even where outcomes trend positive.
- A meta-analysis found that TRT added to standard care improved response rates at one, three, and six months compared with standard care alone.
- A 2014 systematic review of TRT and cognitive behavioral therapy (CBT) found both improved quality-of-life scores, with neither demonstrably superior — though CBT showed an additional benefit on depression scores. None of its nine trials compared the two head to head: eight tested CBT against no treatment, and one tested TRT against masking.
- Newer analyses have found other approaches — including CBT-based methods and shorter enriched-sound protocols — performing comparably or better on certain outcome measures, with far less daily time commitment than classic full-protocol TRT.
- A 2026 umbrella review of 44 systematic reviews lists TRT among the approaches that consistently improved tinnitus outcomes, alongside CBT, hearing aids and sound or music therapy.
The 2026 pooled review, and the number it does not give
The most recent synthesis is a 2026 systematic review and meta-analysis in Acta Otorhinolaryngologica Italica covering 18 studies and 1,712 participants — 1,011 who underwent TRT, and 701 in comparison groups receiving alternative treatments.
In its own terms: improvements in tinnitus severity and quality of life following TRT were demonstrated consistently across the Tinnitus Handicap Inventory, the Tinnitus Questionnaire and visual analogue scales. Heterogeneity between studies was significant, but sensitivity analyses held, and the publication-bias assessment found no systematic bias in effect sizes — which is a genuinely good sign, and rarer in this field than it should be.
What it does not report is how large the benefit is. Its 18 studies entered a qualitative assessment, and the abstract describes direction and consistency without giving a pooled effect estimate. So the most current review of TRT supports the claim that it helps, and leaves the question of how much roughly where it already stood.
That gap matters more here than it would elsewhere, because of what the classic protocol asks for. "TRT works" and "TRT works enough to justify one to two years of daily sound exposure" are different claims, and only the first of them currently has evidence behind it. The authors' own conclusion is that TRT holds promise and that further well-designed randomised controlled trials are warranted to confirm the findings.
What Cochrane said in 2010, and what happened to it
The Cochrane review of TRT, published in 2010, found one trial with 123 participants. Several other trials were excluded because they did not follow the strict TRT protocol, testing modified versions instead — which is itself a comment on how variably TRT is delivered.
That single trial found TRT more effective than tinnitus masking, measured across three instruments at 18 months. Cochrane's conclusion: a single, low-quality randomised controlled trial suggests TRT is much more effective than tinnitus masking.
Note how carefully that is hedged — "a single, low-quality" doing the work at the front of the sentence.
Fifteen years later, the comparison it rested on has not held up. The 2025 review below, covering 15 randomised trials and 2,069 patients, found TRT not superior to tinnitus masking — along with six other comparators. So the one positive finding Cochrane could identify, from one low-quality trial, did not survive a larger evidence base.
That is how the evidence hierarchy is supposed to work, and it is worth seeing happen. A cautious conclusion, properly hedged, overturned by better data. The hedging was doing real work.
What TRT has been compared against, and how it did
The 2026 review above gives direction without magnitude. A second systematic review, published in the European Archives of Oto-Rhino-Laryngology in 2025, approaches it from a more useful angle: not "does TRT help" but "does it beat the alternatives".
It gathered 15 randomised controlled trials covering 2,069 patients (mean age 52.93, 66% male), with study quality on the PEDro scale running from 5 to 8 and a median of 7 — a reasonable standard for this field.
Its finding is a list, and the list is the point. TRT did not provide superior effects compared with any of:
- Tinnitus masking
- Tinnitus educational counselling
- TRT with open-ear hearing aids
- Tailor-made notched music training
- Partial TRT
- Usual care
- "Smart" TRT
Seven comparators, no superiority against any of them.
Two entries on that list carry the most weight, and they are the two in bold. Partial TRT matched full TRT — meaning the complete protocol did not outperform a reduced version of itself. And usual care matched it too.
Set that beside what full TRT asks for. The classic protocol runs to several hours of daily sound exposure sustained over one to two years. A review of fifteen randomised trials finding no advantage over usual care, or over an abbreviated version of the same therapy, is a serious question about whether that commitment buys anything the shorter options do not.
The review's own conclusion is not dismissive — it calls TRT a treatment option, suggests combining it with CBT or other approaches may do better, and asks for studies on long-term effects, on who benefits, and on the optimal protocol. Note what that last request concedes: after thirty years, the optimal protocol is still an open question.
Is it worth pursuing
TRT tends to be a better fit for people who want a structured, counseling-led program and can commit to consistent sound exposure over months, not weeks. If the time commitment is a barrier, it's reasonable to ask an audiologist about shorter sound-enrichment protocols or to start with CBT, which has a comparably solid evidence base with substantially less daily time required. Either way, TRT is typically delivered by an audiologist trained in the specific protocol — it's not something to improvise from a general sound machine app alone.
The 2024 VA/DoD tinnitus guideline treats it that way too. Its provider summary names TRT as an example of recommendation 17, which suggests sound enrichment with ongoing directed tinnitus education by an audiologist. It is graded weak for, which is as strong as any recommendation in that guideline gets, and choosing between sound therapy, TRT and CBT covers how to decide where to start.