Sound World Solutions HD75 OTC Hearing Aids: Features, Prices, Pros & Cons

Written by the Nano Hearing Aids Team
Reviewed for Accuracy by Lindsay Roberts, AuD.

Lindsay Roberts
Sound World Solutions HD75 OTC Hearing Aids: Features, Prices, Pros & Cons

Key Takeaways

  • Sound World Solutions’ HD75 come as a pair of over-the-counter (OTC) hearing aids.
  • These hearing aids come with dual microphones and can be controlled via an app.
  • They have a behind-the-ear  fit and are powered by batteries, with a maximum gain of 42dB and a max output of 117dB SPL.
  • The HD75 starts at $280 for a single device. 

What Are Sound World Solutions HD75 OTC Hearing Aids

HD75 OTC hearing aids offer a straightforward solution for those with perceived mild to  moderate hearing loss, capable of enhancing speech clarity and reducing background noise.

These over-the-counter aids fit discreetly behind the ear and combine digital audio processing with user-friendly features like preset listening environments adaptable to various settings—from quiet conversations at home to noisy restaurants.

NANO Hearing Aids are FDA-registered, Class I devices. Our OTC hearing aids are designed for individuals over 18 years of age with perceived mild to moderate hearing impairment. With prices starting at just $297, they offer a viable solution for those looking to improve their hearing without breaking the bank.

Shop NANO OTC Hearing Aids


What's in the Box:

  • HD75
  • Size 312 battery pack (s)
  • 5 different sized ear tips
  • Ear tip cleaning tool
  • Zippered carrying case
  • User guide

What you get with your purchase of Sound World Solutions’ HD75.

Features of Sound World Solutions HD75 OTC Hearing Aids

HD75 aids are designed to enhance the hearing experience with a focus on user control and customization:

  • Ergonomic Design: Maintains a small, behind-the-ear profile that fits comfortably and discreetly.
  • Battery Life: Uses 312 non-rechargeable batteries, providing up to 4 days of usage.
  • Customizable Fit: Accommodates most ear shapes.
  • Advanced Customizability: Features three built-in amplification presets and manual volume control, all customizable through a mobile app.
  • Voice Prompts: Offers voice prompts for environment modes, volume adjustments, and low battery warnings.
  • Bluetooth Capability: Includes Bluetooth 4.0 for app connectivity; however, it does not support streaming.
  • Sophisticated Audio Processing: Equipped with 16-channel digital audio processing, including noise reduction, feedback cancellation, and dual microphone directionality for enhanced sound clarity.
  • Manual Controls: Allows users to manually adjust settings to suit specific listening environments or preferences.

These features make the HD75 a suitable option for those looking for a high degree of adaptability in their hearing aids, combining traditional aesthetics with modern technology to meet the diverse needs of users.

Pros & Cons of Sound World Solutions HD75 OTC Hearing Aids

We have put these devices to the test, and here are the things we liked and didn’t like about them. 

Pros of Sound World Solutions HD75 OTC Hearing Aids

  • Ease of Access: These hearing aids are available over-the-counter, eliminating the need for medical appointments and long waits. 
  • User-Friendly Operation: Designed with simplicity in mind, the HD75 aids are easy to operate - so they’re a solid choice for users who may be new to hearing aids or prefer straightforward devices.
  • Discreet and Comfortable: With a behind-the-ear design that is both small and ergonomic, these hearing aids provide a comfortable fit while remaining discreet.
  • Durable and Reliable: Built with sturdy materials, the HD75 hearing aids are designed to withstand the rigors of daily use.
  • Suitable for Various Environments: Whether in noisy settings or quiet conversations, the HD75 aids adjust to different sound environments.

A pair of Sound World Solutions HD75 OTC hearing aids.

Cons of Sound World Solutions HD75 OTC Hearing Aids

  • Frequent Battery Replacement: For active users, the non-rechargeable batteries of the HD75 may require frequent changes, which can be inconvenient and costly over time. 
  • Pricey for its Features: At $280 apiece and $500 for a pair, it’s not the most affordable device, especially when considering its offerings. 

HD75 aids offer attractive features, but the lack of rechargeability might turn off buyers looking to save on costs—especially now that there are under-$500 OTC hearing aids that are rechargeable.

A pair of Nano Hearing OTC hearing aids with a charging case. 

Sound World Solutions HD75 OTC Hearing Aids Price & Best Deals

Each HD75 aid costs $280; a pair will set you back $500. Although we found a lower-priced deal on Amazon for two aids–so you might want to shop around before making a decision. 

Who is Sound World Solutions HD75 OTC Hearing Aids for?

HD75 hearing aids are ideal for adults and seniors who experience perceived mild to moderate hearing loss. They are designed for those who want an easy-to-use, customizable hearing solution without the hassle of frequent visits to an audiologist. If you're someone who leads an active lifestyle and needs to hear well in a variety of environments, these hearing aids might be for you.

Sound World Solutions HD75 OTC Hearing Aids User Reviews & Testimonials

Users have remarked positively on the device’s performance but negatively on its price. 


Why NANO Hearing Aids Might Be Better Than Sound World Solutions HD75

If you're looking for a behind-the-ear OTC solution, NANO offers devices that are more affordable while providing sought-after cost-saving features like rechargeability. Case in point: the NANO First Ear Plus BTE, which retails for only $297.

Apart from its affordable price, the First Ear Plus BTE stands out for its portable charging case, capable of charging the device thrice, with each charge lasting 20 hours.

Like most devices in its class, the First Ear Plus BTE combines feedback cancellation and noise management technologies to produce clear, natural sounds. But unlike its competitors, these aids are supported by a US-based team, ready to answer questions and aid in troubleshooting the device 24/7.


The First Ear Plus BTE retails at only $297 and comes with rechargeable batteries and a charging case. 

For individuals aiming to optimize their hearing experience seamlessly and affordably, NANO remains the top choice, offering a perfect blend of cutting-edge technology, user-friendly design, and exceptional value.

Shop Nano OTC Hearing Aids

Frequently Asked Questions (FAQ)

Can the Sound World Solutions HD75 OTC hearing aid stream music? 

No. Bluetooth connectivity is only for app use and cannot be used for streaming.

Is the HD75 suitable for all levels of hearing loss? 

HD75 aids are primarily designed for individuals with perceived mild to moderate hearing loss. They offer a range of adjustable settings that can accommodate the majority of situations encountered by people with this level of hearing difficulty.

Are there additional costs for the app and customization features? 

No, these features are included in the purchase price of the hearing aids, which is $280 apiece.

What is the warranty period for the Sound World Solutions HD75 hearing aid? 

The device comes with the standard one-year manufacturer’s warranty. You can purchase an extended warranty for $60, which adds another year.

Does the NANO First Ear Plus BTE come with an app? 

No, the aids are controlled with a rocker switch, the best option for those looking for simplicity and ease of use.

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