Devialet managed to pack two subwoofers into a speaker the size of a small purse
The Devialet Mania stands only as tall as a smartphone, but it packs four full-range drivers, two subwoofers, and a 10-hour battery.
Devialet’s first soundbar has 17 drivers and costs $2,400
With eight built-in subwoofers, Devialet says you won’t need a dedicated sub when you use its Dolby Atmos-capable Dione soundbar.