What Is a PSAP? Personal Sound Amplification Products Explained
Before you shop for a hearing amplifier, you will almost certainly run into the acronym PSAP - and a tangle of regulatory language, marketing claims, and genuine confusion about what it means, what it covers, and how it is different from a hearing aid. Here is the plain-English explanation of everything you need to know.
PSAP stands for Personal Sound Amplification Product. It is the FDA's technical term for a consumer electronic device that amplifies environmental sounds for people who do not have a diagnosed hearing impairment - originally intended for recreational uses like bird watching, hunting, or hearing distant sounds. In practice, PSAPs are widely used by people with mild to moderate hearing loss as an accessible, lower-cost alternative to prescription hearing aids. They are not classified as medical devices, do not require a prescription, and are sold over the counter. Bellman & Symfon's personal amplifiers - including the Maxi Pro and the Mino - fall within the broader PSAP and personal hearing amplifier category: consumer-grade, no-prescription devices engineered specifically for clearer speech and sound in everyday listening situations.
Start Here: Why PSAPs Are Confusing - and Why That Confusion Matters
If you have spent any time searching for a hearing amplifier, you have encountered a frustrating cluster of overlapping terms: PSAP, personal amplifier, OTC hearing aid, hearable, sound amplifier, assistive listening device. Some of these terms are regulatory categories. Some are marketing labels. Some are informal shorthand that has leaked into common usage. Very few are defined in the same way by different sources - and the FDA's official position on what a PSAP is differs meaningfully from how the word is used in everyday shopping conversations.
This is not a minor semantic issue. The category a device falls into affects how it is regulated, whether it requires a professional fitting, what claims its manufacturer can legally make, how it is priced, and - most importantly - whether it is likely to be the right solution for your specific hearing situation. A person who buys a PSAP expecting it to function like a prescription hearing aid is going to be disappointed. A person who avoids PSAPs because they assume the category is unregulated and ineffective is going to miss out on genuinely useful technology that could meaningfully improve their daily listening experiences.
This guide untangles the terminology, explains the regulatory framework in plain English, and gives you a clear picture of what PSAPs actually are, what they can and cannot do, and when one is the right tool for the job. For a broader look at the whole category of personal hearing amplifiers - including specific product recommendations - see our complete buyer's guide: Best Personal Hearing Amplifiers for Seniors & Hard of Hearing (2026 Buyer's Guide).
The Official Definition: What "PSAP" Actually Means
The term Personal Sound Amplification Product was formally defined by the U.S. Food and Drug Administration in a 2007 guidance document titled Regulatory Requirements for Hearing Aid Devices and Personal Sound Amplification Products. That document laid out the first official regulatory distinction between hearing aids - which are medical devices - and PSAPs - which are consumer electronics.
The FDA's technical definition
According to the FDA's guidance, a PSAP is "a wearable electronic product that is intended to amplify sounds in the environment for non-hearing-impaired consumers." The key phrase in that definition - and the source of almost all the confusion - is "non-hearing-impaired consumers." The FDA drew this line deliberately: a device intended for use by people without hearing impairment is a consumer product, not a medical device, and therefore does not require the same regulatory oversight as a hearing aid.
The FDA's original examples of PSAP use cases were explicitly recreational: bird watching (hearing distant bird calls), hunting (detecting game sounds at a distance), listening to a lecturer from the back of a large room, or hearing distant conversations in outdoor environments. These are all situations where a person with normal hearing might benefit from amplification for a specific purpose - not situations where amplification is medically necessary to compensate for a hearing impairment.
The key phrase that causes all the confusion
The intended-use language is what creates the gap between the FDA's official definition and how most people actually use PSAPs. In practice, millions of people with mild to moderate hearing loss use PSAPs as a primary listening aid for everyday conversations, TV viewing, restaurant use, and one-on-one communication - exactly the situations where a hearing aid would be prescribed. The FDA's definition is about intended use (what the manufacturer designed and marketed the device for), not about who actually ends up using it. A device can be legally classified as a PSAP while being used by someone who genuinely has hearing loss - that is not a regulatory violation on the user's part, and it is not illegal for a manufacturer to sell such a device to someone with hearing loss. The classification affects what claims the manufacturer can make, not who can buy the product.
When the FDA says PSAPs are "intended for non-hearing-impaired consumers," it is describing what the manufacturer is permitted to say about the product - not imposing a restriction on who can purchase or use it. A PSAP manufacturer cannot legally advertise their product as a treatment or compensation for hearing loss. They can describe it as amplifying sound, improving speech clarity, and helping in specific listening situations. That distinction affects marketing language, not the device's actual performance or your right to use it.
This is why Bellman & Symfon's amplifiers are described as personal hearing amplifiers and personal sound amplification devices rather than hearing aids - the language is precise and legally appropriate, and it accurately describes what the products do without making medical claims.
A Brief History: How PSAPs Became a Mainstream Category
Understanding how the PSAP category evolved helps explain why the terminology is still somewhat unsettled and why the regulatory picture changed significantly in 2022.
Before the term existed: body-worn amplifiers and pocket talkers
Long before the FDA coined the term PSAP, a category of body-worn listening devices existed for people with hearing loss who either could not afford or did not want prescription hearing aids. These devices - often called pocket talkers, personal listeners, or assistive listening devices - were worn on the body or placed on a table, and they amplified speech through a wired or wireless earphone. They were sold in catalogs, pharmacies, and assistive device stores, and they occupied a regulatory grey area: too simple to be regulated like hearing aids, too specifically targeted at hearing loss to be described as general consumer electronics.
The 2007 FDA guidance: drawing the line
The 2007 FDA guidance document was not a new regulation - it was a clarification of existing policy. The FDA stated clearly that PSAPs, as consumer electronic products not intended for hearing impairment, fell outside the definition of a medical device and therefore outside the regulatory requirements that applied to hearing aids. This created a formal, named category for the first time and gave manufacturers a clear framework: design and market your product for general sound amplification, not for hearing loss, and it is a PSAP. Design and market it for hearing impairment, and it is a medical device subject to FDA regulation.
The 2022 OTC hearing aid ruling: the category changes again
The most significant regulatory development in recent years was the FDA's August 2022 final rule establishing the Over-the-Counter (OTC) Hearing Aid category. For the first time, the FDA created a pathway for hearing aids - devices explicitly designed and marketed for people with mild to moderate hearing loss - to be sold directly to consumers without a prescription or a professional fitting. This was a major shift: previously, any device marketed for hearing loss was a prescription medical device by default.
The creation of the OTC hearing aid category did not eliminate PSAPs - it added a new category alongside them. The result is now a three-tier landscape: PSAPs (consumer amplifiers, no hearing loss claim), OTC hearing aids (medical devices for mild to moderate hearing loss, sold without prescription), and prescription hearing aids (medical devices for all levels of hearing loss, fitted by an audiologist). This three-tier structure is covered in detail in the comparison section later in this article.
How PSAPs Work: The Technology Inside
Modern PSAPs are significantly more sophisticated than the simple analog amplifiers of earlier decades. Understanding the core technology makes it easier to evaluate the meaningful differences between devices and to understand why premium PSAPs outperform cheaper options in real-world listening situations.
The signal chain from sound to ear
Every PSAP - from the simplest to the most advanced - follows the same basic signal chain: a microphone captures environmental sound, a processor amplifies and shapes that signal, and a speaker or earphone delivers the result to the ear. What varies enormously across devices is the quality and sophistication of each stage in that chain.
The Microphone Stage
Entry-level PSAPs use a single omnidirectional microphone that captures sound equally from all directions. Premium devices like the Bellman Mino feature dual microphone systems - switching between an omnidirectional mode for quiet environments and a directional mode for noisy settings where the user wants to focus on a speaker directly in front of them. Directional microphone technology is one of the most significant practical differentiators between budget and quality PSAPs.
Digital Signal Processing (DSP)
The processor is where the most meaningful variation occurs. Analog amplifiers simply make everything louder - speech, background noise, HVAC systems, and dishwashers equally. Digital signal processors analyze the incoming audio and selectively amplify speech frequencies while attenuating noise. Advanced DSP in devices like the Bellman Maxi Pro uses algorithms that continuously adapt to the acoustic environment, applying up to 135 dB of amplification where needed while suppressing feedback and background noise in real time.
Frequency Shaping and Tone Control
Human speech falls primarily in the 500 Hz to 4,000 Hz frequency range. Many people with hearing loss experience uneven frequency sensitivity - their high-frequency hearing (critical for consonant distinction) deteriorates before their low-frequency hearing. A quality PSAP with tone control allows the user to boost specific frequency ranges - particularly the high frequencies where speech clarity is most affected - independently of overall volume. This produces meaningfully clearer speech than simple volume amplification alone.
Output and Delivery
Sound reaches the user through wired earphones, earbuds, neckloops, or in some devices via a built-in speaker. Premium PSAPs like the Bellman range include multiple output options - on-ear headphones for comfortable extended wear, in-ear earbuds for discreet use, and neckloop compatibility for users whose hearing aids have a Telecoil (T-coil) input, allowing the amplified signal to be delivered directly into the hearing aid without an external earphone.
What digital means in practice - and why it matters
The shift from analog to digital signal processing in PSAPs mirrors the same transition that transformed hearing aids in the 1990s. An analog amplifier applies a fixed gain to an input signal - it makes everything louder by a predetermined amount. A digital processor converts the incoming audio to a digital signal, processes it through algorithms that can distinguish speech from noise, suppress feedback whistling, and apply frequency-specific amplification, then converts it back to an analog signal for delivery to the ear. For most people in most listening situations, the difference is immediately perceptible: digital PSAPs produce clearer, less fatiguing sound, particularly in environments with background noise.
The Three-Way Distinction: PSAP vs. OTC Hearing Aid vs. Prescription Hearing Aid
The 2022 FDA ruling that created OTC hearing aids has made the consumer landscape more complex - and more beneficial for people with hearing loss - than it has ever been. Here is the complete three-way comparison, covering regulation, intended use, how they are obtained, typical price range, and what to expect from each category.
| Factor | PSAP | OTC Hearing Aid | Prescription Hearing Aid |
|---|---|---|---|
| FDA classification | Consumer electronic product - not a medical device | Class II medical device - FDA regulated, sold OTC | Class II medical device - FDA regulated, dispensed by audiologist |
| Intended user | Officially: people without hearing impairment (recreational). In practice: widely used for mild/moderate loss | People with mild to moderate hearing loss - stated explicitly in FDA labeling | All levels of hearing loss - audiologist evaluates and fits for the individual |
| Prescription required | No - sold directly to consumers | No - sold directly to consumers since 2022 | Yes - audiologist evaluation and fitting required |
| Professional fitting | Not required | Not required (user self-fits) | Required - audiologist programs and fits the device |
| Typical price range | $60–$300 for quality devices; budget options from $20 | $200–$1,500 per pair - overlaps with premium PSAPs at the low end | $1,000–$7,000+ per pair - most expensive category |
| Can claim to treat hearing loss | No - manufacturers cannot make this claim | Yes - explicitly for mild to moderate hearing loss | Yes - for all levels of hearing loss |
| Audiogram-based programming | Not available - fixed or user-adjusted amplification | Some models include app-based audiogram fitting; most use preset profiles | Always - hearing aid is programmed to match the user's specific audiogram |
| Right for | Mild situational difficulty; recreational amplification; trying amplification before committing to hearing aids; budget-conscious users | Confirmed mild to moderate hearing loss; people who want a medical-grade device without an audiologist visit | Moderate to severe to profound hearing loss; anyone whose loss significantly impacts daily life and needs a precisely fitted device |
For a comprehensive deep-dive into the hearing amplifier vs. hearing aid distinction - including practical guidance on when each is appropriate - see our dedicated guide: Hearing Amplifier vs. Hearing Aid: What's the Real Difference?
What PSAPs Can and Cannot Do: Setting Realistic Expectations
One of the most common sources of disappointment with PSAPs - and one that is entirely avoidable - is using one for a situation it was not designed to handle. Understanding what PSAPs do well, and where they reach their practical limits, protects against that disappointment and helps you make a decision you will be satisfied with long-term.
A PSAP does not provide the audiogram-matched, frequency-specific amplification that a prescription hearing aid delivers after a professional fitting. It cannot compensate for severe or profound hearing loss, recruit missing hair cells, or replicate the adaptive sound processing in premium hearing aids that costs several thousand dollars. It will not sound identical to a $6,000 pair of behind-the-ear hearing aids, and it cannot replace the recommendation of an audiologist for someone with significant hearing loss affecting their daily safety or quality of life.
A quality PSAP meaningfully improves speech clarity in one-on-one conversations and small group settings. It reduces listening fatigue, increases TV audio clarity without raising the volume for others, makes phone calls easier to follow, and helps in moderately noisy environments through directional microphone technology. For the tens of millions of people with mild to moderate hearing loss who have not yet taken the step toward prescription hearing aids - whether for cost, access, or personal preference reasons - a well-designed PSAP provides immediate, real-world benefit that can be significant.
Who Benefits From a PSAP - and Who Should See an Audiologist First
The single most important decision in the personal hearing amplifier space is not which device to buy - it is whether a PSAP is the appropriate starting point for your situation. For many people, it is. For others, a medical evaluation should come first. Here is how to make that determination.
Good candidates for a PSAP
- People who notice occasional difficulty hearing speech clearly in specific situations - restaurants, meetings, crowded rooms - but generally manage well in quiet one-on-one conversation
- People with a known mild to moderate hearing loss who want an accessible, lower-cost option before committing to prescription hearing aids
- People who have been told by an audiologist that their loss is mild and that amplification might help, but who have not yet purchased hearing aids
- People who primarily want help in specific situations - watching TV, phone conversations, group dinners - rather than all-day amplification
- People who have tried prescription hearing aids and found them uncomfortable or difficult to wear, and want an alternative for specific listening contexts
- People who are exploring amplification for the first time and want to understand whether they benefit from it before making a larger investment
- Hunters, birdwatchers, sports spectators, and others who want recreational sound amplification without any hearing loss diagnosis
Signs you should consult an audiologist before buying a PSAP
- Sudden hearing loss in one or both ears - this is a medical emergency
- Hearing loss accompanied by dizziness, vertigo, or balance problems
- Hearing loss with pain, pressure, or drainage from the ear
- Significant asymmetry - hearing is much worse in one ear than the other
- Hearing loss that has appeared rapidly over weeks or months
- Tinnitus (ringing, buzzing, or hissing) that has appeared recently or changed significantly
- Hearing loss that significantly affects your ability to function at work or maintain social relationships
- Any concern that the cause of your hearing loss has not been identified
None of the above conditions mean a PSAP is permanently inappropriate - they mean a healthcare provider should evaluate the situation before any amplification device is introduced. Many of the conditions listed above are treatable, and amplification without treatment can sometimes delay care. For most people with age-related or noise-induced hearing loss that has been stable over time, however, these warning signs do not apply, and trying a PSAP is a reasonable, safe starting point.
Types of PSAPs Available in 2026
PSAPs come in several distinct form factors, each suited to different use patterns, lifestyle preferences, and listening environments. Understanding the categories makes it much easier to narrow down the right type before comparing individual products.
Pocket / Body-Worn Amplifiers
The classic PSAP form factor. A compact unit - roughly the size of a small TV remote - is held or clipped to clothing, with a wired earphone or headphone set connecting to the user's ear. The Bellman Mino is a premium example: pocket-sized, dual-microphone, up to 30 hours of battery life per charge, and compatible with earbuds, headphones, or hearing aids via Telecoil. Pocket amplifiers allow larger controls and buttons than in-ear devices - a significant practical advantage for older users or anyone with reduced manual dexterity.
Bluetooth-Connected Amplifiers
A newer category of PSAP that combines personal amplification with wireless audio streaming. The Bellman Maxi Pro is the primary example in Bellman's range: it amplifies speech in the immediate environment through its internal microphone, and also connects via Bluetooth to smartphones and tablets to stream phone calls, TV audio, and music directly to the included headphones or earbuds. This dual-function capability - environmental amplifier plus wireless audio streamer - represents the current premium tier of the PSAP category.
Simple Personal Amplifiers
Battery-powered, straightforward amplifiers without Bluetooth or advanced signal processing - designed for users who want reliable speech amplification in quiet settings without technology complexity. The Bellman Maxi Classic fits this description: user-friendly operation with large tactile buttons, an omnidirectional microphone, hearing loop (Telecoil) compatibility for use in theaters and public venues, and a design optimized for simplicity. For users who primarily need help in quiet one-on-one settings, this category often provides the most practical value at the most accessible price point.
Remote Microphone / Two-Part Systems
A more specialized PSAP format where a microphone transmitter is placed near or worn by the speaker, and the amplified signal is sent wirelessly to a receiver unit worn by the listener. This format - exemplified by the Bellman Domino Pro - excels in classroom, meeting, lecture, and long-distance listening situations where the user may be far from the speaker. The wireless microphone eliminates the distance and background noise problem entirely, delivering near-perfect speech clarity regardless of the room's acoustic conditions.
What to Look for When Evaluating a PSAP
The PSAP market spans a wide range - from $20 budget devices found online to $300 premium models with digital signal processing, Bluetooth, and dual microphones. The features that actually determine real-world listening performance are not always obvious from a product listing. Here is what to evaluate before buying.
- Digital signal processing: The single most important technical differentiator. A digital PSAP actively processes sound to improve speech clarity and reduce feedback. An analog device simply amplifies. Always confirm that the device you are considering is described as digital - and be skeptical of products that are marketed as digital but do not specify DSP.
- Microphone configuration: An omnidirectional microphone is suitable for quiet environments and natural conversation. A directional microphone - or ideally a device with switchable omni/directional modes like the Bellman Mino - adds meaningful value in noisy environments like restaurants and social gatherings. For a detailed comparison of these two microphone types, see our guide: Directional vs. Omnidirectional Mics in Hearing Amplifiers.
- Maximum amplification level: Measured in dB SPL (sound pressure level output). A quality PSAP typically provides 100–135 dB of maximum amplification. Be cautious of devices that do not specify this figure.
- Feedback suppression: The whistling sound that occurs when amplified audio leaks back into the microphone is called feedback. Quality PSAPs include active feedback cancellation that suppresses this automatically. Budget devices often do not.
- Battery life and type: Body-worn PSAPs use either standard AA/AAA batteries or built-in rechargeable lithium-ion batteries. Rechargeable models (like the Mino's 30-hour capacity) are more economical and environmentally friendly over time; battery-powered models can be refueled instantly anywhere. For a detailed comparison, see: Rechargeable vs. Battery Hearing Amplifiers: Which Lasts Longer?
- Output options: Consider which accessory the device will be used with: standard earbuds, over-ear headphones, a neckloop for Telecoil-equipped hearing aids, or a direct Bluetooth audio stream. Devices with multiple output options offer more flexibility as your needs change.
- Telecoil / T-coil compatibility: If you wear hearing aids that have a T-coil setting, a PSAP with a neckloop output lets the amplified signal be delivered directly into your hearing aids. This is a significant feature for hearing aid wearers. For more detail: Do Hearing Amplifiers Work with Hearing Aids & Telecoil?
- Control size and legibility: For older adults or anyone with reduced manual dexterity, button size and tactile feedback matter enormously. Devices with large, clearly labelled controls - like the Bellman Maxi Classic and Maxi Pro - are meaningfully easier to operate daily than devices with small flush buttons or touch-sensitive panels.
- Build quality and durability: A PSAP worn or handled daily needs to be durable. Soft-grip materials, reinforced audio connectors, and a protective travel case (available separately for most Bellman devices) extend the practical life of the product significantly.
Are PSAPs Regulated? What the FDA Actually Requires
One of the most persistent misconceptions about PSAPs is that they are completely unregulated - that any device can call itself a PSAP regardless of quality or safety. This is not accurate. What is accurate is that PSAPs are regulated differently from hearing aids, with lighter-touch requirements appropriate for consumer electronic products.
PSAPs as Class I devices
PSAPs that are sold as consumer electronic products - not making hearing loss claims - are generally subject to FDA Class I regulations under the broad category of electronic consumer products. Class I represents the lowest level of FDA regulatory control, covering products where the risks are minimal and general controls are sufficient. This means PSAPs must comply with general manufacturing practices and cannot make fraudulent or misleading claims, but they do not require pre-market approval (PMA) or the rigorous clinical testing that Class II or Class III medical devices require.
What "general controls" means in practice
For a PSAP manufacturer, general controls mean: the product must be manufactured in a facility that complies with FDA requirements, the device cannot make false or misleading claims about its capabilities, and the product cannot be marketed as a hearing aid (which would reclassify it as a medical device). What general controls do not require: pre-market testing for safety and efficacy, clinical trials, audiological validation, or submission of technical documentation to the FDA before sale.
Because PSAPs do not require pre-market FDA review, the quality and performance differences between devices are real and sometimes significant. A $25 device from an unknown manufacturer and a $240 device from an established assistive technology company like Bellman & Symfon are both technically "PSAPs," but they are not interchangeable. The established device has decades of engineering refinement, real-world clinical use, and a manufacturer who understands the specific needs of people with hearing loss. The price difference reflects genuine differences in signal processing quality, durability, accessories, and long-term reliability.
This is why brand reputation, engineering heritage, and user feedback from the specific target population matter considerably more when evaluating PSAPs than the regulatory category alone.
Bellman & Symfon's PSAPs: Where They Fit the Category
Bellman & Symfon has been designing assistive listening and alerting technology for people with hearing loss since 1989. The company's personal hearing amplifier range - the Maxi Pro, Mino, Maxi Classic, and Response - occupies the premium tier of the PSAP and personal hearing amplifier category. What distinguishes Bellman's approach from the broader PSAP market is not just the technology - it is the design philosophy.
Every Bellman amplifier is engineered specifically for people living with hearing loss, not retrofitted from a general consumer audio product. The button sizing, tactile feedback, control layouts, and accessory compatibility are all designed with the practical daily realities of hearing loss in mind: users who may have reduced manual dexterity, who need a device they can operate intuitively without looking at it, and who need reliable performance across multiple listening environments rather than just one optimized use case.
The definition of a PSAP is a regulatory category. What it does not define is quality, engineering, or genuine usefulness for people with hearing loss. The best personal hearing amplifiers are designed specifically for hearing loss - not for bird watchers who happen to be the regulatory intended user.
Bellman & Symfon - Product Design PhilosophyThe Maxi Pro's combination of 135 dB amplification, Bluetooth connectivity, and digital noise reduction makes it one of the most feature-complete PSAPs available at its price point. The Mino's switchable directional/omnidirectional microphone system - a feature common in premium prescription hearing aids - is rare in the PSAP category and delivers meaningful performance in restaurant and group conversation settings where single-microphone PSAPs struggle. For guidance on choosing between these two, see: Bellman Maxi Pro vs. Mino: Which Amplifier Is Right for You?
Your Next Steps: What to Do With This Information
Understanding what a PSAP is - and isn't - gives you a significantly clearer framework for making a good purchasing decision. The regulatory category is a useful starting point, but the questions that actually matter when choosing a device are more practical: What specific listening situations do I struggle in most? How much does background noise affect my ability to follow conversations? Do I want Bluetooth for phone calls and TV audio? Would directional microphone technology help me in restaurants? Is Telecoil compatibility relevant because I also wear hearing aids?
If you have not already, a conversation with an audiologist is always a worthwhile investment - not necessarily to be prescribed hearing aids, but to understand your specific hearing profile and have an informed baseline for evaluating what a PSAP can and cannot realistically do for you. If you already have a sense of your hearing loss level and the specific situations where you need help, a quality PSAP is a practical, immediate, and accessible solution that can make a meaningful difference starting from the first day of use.
Use This Before You Buy Any Personal Amplifier
Work through each question for any device you are considering. Missing answers are red flags.
- Is the device explicitly described as digital? (Not just "digital quality")
- Does it have active feedback cancellation?
- What is the maximum amplification level (dB SPL)?
- Does it have a directional microphone mode, or omnidirectional only?
- Is the battery rechargeable or replaceable - and which fits my lifestyle?
- Does it include earbuds, headphones, or both?
- Is it Telecoil-compatible if I wear hearing aids with T-coil?
- Does it have Bluetooth if I want phone calls or TV audio streaming?
- Are the buttons large enough for confident daily operation?
- Is the manufacturer established in assistive listening technology?
- Have I checked whether any of my warning-sign symptoms apply?
- Do I understand which situations I want help in most?
Ready to explore Bellman's personal hearing amplifiers?
Browse the full range - from the Bluetooth-enabled Maxi Pro to the dual-microphone Mino - all engineered specifically for people living with hearing loss.
Sources and references: U.S. Food and Drug Administration (FDA) - "Regulatory Requirements for Hearing Aid Devices and Personal Sound Amplification Products," Guidance Document (2009, updated 2022); FDA Final Rule: "Medical Devices; Ear, Nose, and Throat Devices; Establishing Over-the-Counter Hearing Aids" (August 2022); FDA Device Regulation and Guidance, Class I General Controls · National Institute on Deafness and Other Communication Disorders (NIDCD) - Hearing Loss Statistics; Age-Related Hearing Loss; Quick Statistics About Hearing (2021 update) · National Academies of Sciences, Engineering, and Medicine - "Hearing Health Care for Adults: Priorities for Improving Access and Affordability" (2016); discussion of PSAP regulation and access · Federal Trade Commission (FTC) - Consumer Information: Hearing Aids; guidance on marketing claims for hearing devices · Consumer Reports - "What You Need to Know About Over-the-Counter Hearing Aids" (2022) · JAMA Internal Medicine - Lin et al., "Hearing Loss and Incident Dementia" (2011); age-related hearing loss prevalence data · Bellman & Symfon - Maxi Pro personal amplifier specifications: 135 dB max amplification, digital signal processing, Bluetooth 5, tone control, omnidirectional microphone, rechargeable lithium-ion (us.bellman.com/products/maxi-pro) · Bellman & Symfon - Mino personal amplifier specifications: dual omnidirectional/directional microphone system, up to 30 hours battery per charge, Telecoil neckloop compatible, digital DSP (us.bellman.com/products/mino) · Bellman & Symfon - Maxi Classic, Response, and Domino Pro product specifications (us.bellman.com/collections/personal-hearing-amplifiers).
This article is for informational purposes only and does not constitute medical advice. If you have concerns about your hearing, consult a licensed audiologist or healthcare provider for a personalised evaluation and recommendation.
