Sony touts the HT-AX7 as a revolution in the portable wireless home audio space. It is technically a modular kit, with 2 'satellite' sub-speakers that can detach from the main unit to create a "bubble" of "three-dimensional surround sound" around the user or users with 360 Spatial Sound Mapping technology. The HT-AX7 set is rated to last for up to 30 hours per charge, and is available to order from now.