TSC-i48 Hearing Aid
$999 risk-free 90-day return

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Based on the principles of Threshold Sound Conditioning, the TSC-i48 is the FIRST product in the world that combines the functionality of the traditional hearing aid with an innovative feature to reverse hearing loss by treating the fundamental aspects of hearing loss.

- The first non-invasive, non-drug therapy to improve age-related and noise-induced hearing loss

- Possibility of significant hearing improvement effect by using Threshold Sound Conditioning (TSC)

- Used as the test device for TSC clinical trials with the Stanford University School of Medicine (prototype version)

FAQ Specifications Technical Details


What is TSC-i48?

TSC-i48 is The Good Ear Company’s first BTE (Behind The Ear) hearing aid that enables individuals with mild to severe hearing loss to communicate more freely, function more easily day-to-day and achieve a whole host of other benefits, ranging from career advancement to better balance. It also has a feature called TSC (Threshold Sound Conditioning - hence the TSC name!) that is the underlying technology for some interesting improvements in the areas of hearing loss.

What are the product specifications?

You can find out more about the specifications here.

How much does TSC-i48 cost?

The original price is $1,670 but from time to time, we run limited time promotions that offer better prices. Typically, a hearing aid similar to TSC-i48 - without the TSC feature - from an audiologist can cost between $3,000 to $6,000.

What is included in the hearing aid package?

The TSC-i48 ships with a hearing aid, two receiver tubes (left and right), two ear tips, cleaning brush and one size 13 battery

TSC (Threshold Sound Conditioning)

Tell me more about TSC feature


I have severe hearing loss. Can TSC improve my hearing?

It depends....

Is TSC feature FDA approved?

No, it is not FDA approved (yet). We have recently conducted and completed a clinical study with the Stanford University Hospital and the Palo Alto Medical Foundation. We are preparing an FDA approval based on these results. The results can be checked on this document.

Do I have to leave the TSC feature ‘ON’ 24 by 7?

Based on our previous researches conducted in both South Korea and the US, it is recommended that you leave the TSC feature ‘ON’ for 30 minutes per day.

Payment and Insurance

Do you accept insurance?

Unfortunately, hearing aids are not covered by most insurance plans and The Good Ear Company does not accept insurance at this time.

What forms of payment do you accept?

We accept all major credit and debit cards, as well as PayPal payments

Can I pay in installments?

No, we do not accept payments in installments.

Warranties and Returns

What is your warranty policy?

The TSC-i48, with the exception of the battery and receiver tube, is covered by a one year manufacturer warranty. All covered parts will be repaired or replaced with new or refurbished components without any additional charge. The warranty does not cover malfunctions due to user errors or mistreatment of the hearing aid such as physical shock, excessive wax build-up, or tampering. Please note that the warranty is based upon the date of purchase, not the date of manufacture.

What is your return policy?

We have a no-questions-asked, no-fee 90-day return policy. If you wish to return your hearing aid for any reason, just let us know by sending an email to info@thegoodear.com and we will provide you with a mailing label that you can attach to the original packaging.

Reprogramming and Servicing

Can I have my hearing aid reprogrammed (re-fitted)?

Digital Hearing Aid Functions

  • - Adaptive Feedback Cancellation
  • - 8 Biquadratic Filters
  • - 4 Channels of WDRC(Wide Dynamic Range Compression)
  • - Frequency Response Shaping with Graphic EQ
  • - High Quality 20-bit Audio Processing
  • - Automatic Telecoil
  • - High Power/ High Gain Capability
  • - 96 dB Input Dynamic Range with HRX™ Headroom Extension
  • - High Fidelity Audio CODEC
  • - Drives Zero-bias Two-terminal Receivers
  • - Adaptive Noise Reduction
  • - TSC Signal On/Off with Toggle Switch
  • - 3 dB Step TSC Signal Volume Control
Parameters Characteristics Limits
Maximum OSPL 90 120 dB SPL 103 dB
HFA OSPL 90 113 dB SPL 103 dB
Maximum Full On Gain @ 50 52 dB 102.5 dB
HFA Full On Gain @ 50 47 dB 2700 Hz
Frequency Range 100 Hz – 8,000 Hz 109 dB
Input Dynamic Range < 96 dB in HRX on
100 Hz – 8,000 Hz Bandwidth
109 dB
Total Harmonic Distortion
70 dB SPL in 500 Hz 0.8 % Less than 3%
70 dB SPL in 800 Hz 0.9%
65 dB SPL in 1,600 Hz 0.1 %
Equivalent Input Noise Level 106 dB 109 dB
Audio Path Latency 4.2 ms
Battery (Condition for Use) 0.93 mA Less than 20%
AGC @ 55 dB and 90 dB
Attack 10 ms +/- 5
Release 27 ms
Temperature 10°C – 40°C
Relative Humidity 106 dB
Pressure 860 HPA – 1060 HPA

Measuring Equipment: ECC-2HA Coupler / Reference Standard: IEC60118-7

Acoustics Parameters Min Typ Max
Sensitivity 100 Hz 97 dB 100 dB 103 dB
500 Hz 97 dB 100 dB 103 dB
1000 Hz 96.5 dB 99.5 dB 102.5 dB
Peak 1 Frequency 2100 Hz 2400 Hz 2700 Hz
Output 103 dB 106 dB 109 dB
Valley 1 Frequency 4100 Hz 4600 Hz 5100 Hz
Output 90 dB 93 dB
Peak 2 Frequency 5300 Hz 5800 Hz 6300 Hz
Output 93 dB 97 dB 101 dB
THD 1/3 peak 1% 5%
1/2 peak 1% 5%