The Solar Ear HD USB-43 is a behind the ear hearing aid designed to be affordable and sustainable. The battery is rechargeable and uses a USB connection.
SDG 3: Good Health and Well-Being
Market Suggested Retail Price
Target Users (Target Impact Group)
Distributors / Implementing Organizations
Solar Ear manufactures all of their products in their factories in Brazil, Botswana, and China.
Intellectural Property Type
User Provision Model
Solar Ear hearing aids are sold by distributors in 40 countries. Contacts for these distributors are listed here.
Distributions to Date Status
Peak OSLP 90 (dB SPL)
High frequency average (HFA) OSLP 90 (dB SPL)
HFA full-on gain (dB)
Total harmonic distortion for 500Hz (%), 800Hz (%) and 1600Hz (%)
5, 4, 4
Equivalent input noise (dB)
Number of frequency channels
Lithium polymer battery
Battery current (mA)
Memory switch (Y/N)
T-coil feature (Y/N)
The Solar Ear USB-HD-43 is a behind the ear hearing aid designed for people with mild to moderate hearing loss. The device is powered by a lithium polymer battery which requires two hours of charging to last 16-20 hours. The aid can be charged from any USB port. The USB-HD-43 can store two listening programs using the memory switch.
The first line of support for the USB-HD-43 is this user manual. The hearing programs must be set by a healthcare professional.
While the product is under warranty it can be sent to Solar Ear for repair. Replacement batteries are also available.
The battery can be charged 500 times without degradation.
Manufacturer Specified Performance Parameters
- Requires only 2 hours charging for 16 hours of use
- Charging chip minimizes heat produced
- 2 channels
- Noise reduction
- Convenient to use and charge
Vetted Performance Status
Solar Ear ran a clinical trial on their behind the ear aid with Bispebjerg Hospital which showed that participants had increased hearing in the desired frequency range.
Patients with a middle-ear infection are cautioned not to use this product until cured, unless instructed otherwise by a doctor.
Complementary Technical Systems
USB charging ports are needed to receive the device.
Academic Research and References
Parving, A., Christensen, B., Nielsen, J., Konrádsson, K., 2005, Clinical Trial of a Low-Cost, High Power Compression Hearing Aid, Audiological Medicine, 3(2), pp.76–81.
Humphreys, G., 2013, Technology Transfer Aids Hearing, Bulletin of the World Health Organization, 91(7), pp. 471–472.
Compliance with regulations
The Solar Ear USB-HD-43 bears the CE mark and is FDA approved.
The hearing aid was evaluated using the IOI-HA form. This form has 7 questions about product satisfaction and limitations in activity. The responses are graded on a scale of 1-5, where 5 is the maximum score. At the end of testing the subject marks a preference for the test-hearing aid or the previously fitted hearing aid.