Thieaudio does it again — the Valhalla is the best IEM I've ever used: This $,1999 IEM has 19 drivers in each ear, and it sounds absolutely divine

With the Valhalla, Thieaudio has an IEM with 19 drivers in each ear, a titanium shell, and sound quality you'll have to hear to believe.

source https://www.androidcentral.com/accessories/audio/thieaudio-does-it-again-the-valhalla-is-the-best-iem-ive-ever-used