A Wakefield startup is using scanning technology from MIT and a life sciences company to map customers’ ear canals and 3D-print earbuds.

The catch is, not only are custom headphones expensive, you also have to visit an audiologist to make impressions of your ear canals. Fees vary, but it's generally around $100.

We take a look at 9 in-ear-canal headphones that aim to improve on your iPod or iPhone's stock earbuds while blocking considerably more external noise.

They can advise them on which model will suit their specific needs. ... Eargo sells a range of discreet hearing aids that sit inside the ear canal. Its products are available for purchase online.

Many pre-molded plugs are available in sizes for small, medium, or large ear canals. A critical tip about pre-molded plugs is that a person may need a different size plug for each ear. Directions for ...

one in-ear-canal (IEC) model; Prices for Eargo hearing aids range from $1,950–$2,650. Learn more about the Eargo brand here. SHOP NOW. Best range of colors: Lively.