See reviews below to ... Costco’s return policy for hearing aids? Costco has a 180-day full-refund return policy for hearing aids. Does Costco sell hearing amplifiers? Costco does not sell ...

Our hearing aid brand ratings, based on exclusive survey data ... there’s also the option of purchasing non-hearing aid sound amplifiers, known as personal sound amplification products (PSAPs).

[NotionSunday] put together a hearing amplifier project that probably doesn’t hit many of those design criteria. However, thanks to a 3D printed case, it looks pretty good. The device uses a ...