DUBS Acoustic Filters are ear plugs designed by Doppler Labs and were released in 2014.

[1][2] In 2014, Doppler Labs launched DUBS Acoustic Filters as their first product at the Global Citizen Festival in New York City.

[6] Doppler Labs brought on a roster of partners and investors from the entertainment and music industries to support DUBS including Hans Zimmer,[7] Quincy Jones, Tiesto, and Mark Ronson, among others.

[8][9] Doppler Labs designed DUBS Acoustic Filters to accommodate the need for audio fidelity when listening to music.

[12][13] DUBS Acoustic Filters were widely reviewed by media for their ability to protect people's hearing at concerts without sacrificing the fidelity of the music[14][15][16] and as suitable accessories for air travel.