Few speakers have garnered such critical acclaim as the original Debut Series by ELAC. They established a new value proposition with build quality and performance never before attainable at such an affordable price. Debut \"changed the game\" and now its changed again with the Debut 2.0 Series—proof that ELAC cant leave well enough alone. Redesigned from the ground up they sound even more remarkable than the speakers that sparked the revolution in high-end sound. Dolby Atmos technology expands the sonic landscape creating a true 3-D space that youve got to hear to believe. With Dolby Atmos-enabled AV receivers and processors simply add the Debut A4.2 to the top of your bookshelf or floorstanding speakers to achieve dimensionality that puts you in the middle of the music and the action.