The world's first planar magnetic wireless earphones don't come cheap
 

Planar magnetic headphones are the HiFi tech du jour via impressive (but pricey) recent models like the Blue Ella and Audeze Sine. Now, RHA has brought the tech down to a tiny new size with the CL2 Planar earphones. Not only are the buds very compact...

https://www.engadget.com/2018/08/23/...ones-wireless/