In September, Sonos launched two new audio devices and introduced several updates to its operating system. These updates include an improved version of its voice assistant powered by artificial intelligence, as well as new ways for existing Sonos devices to interact with each other. One of the standout features is the "portable surround" function, which allows a single speaker to serve multiple roles: as a Bluetooth portable speaker, as part of a multiroom sound system, or as a component of a home cinema setup. This feature is currently available on the Move 2 and Play speakers, as well as the Sonos Arc, Arc Ultra, Beam (2nd generation), and the newly released Beam Ultra. The feature is delivered through a free software and firmware update, but it requires a compatible soundbar paired with two Move 2 or Play speakers. Previously, once Era 100 or Era 300 speakers were set up as rear speakers for a soundbar, they remained in that role permanently unless manually changed via the Sonos app. The new system offers more flexibility, allowing users to keep one Play speaker in a different location, like a kitchen countertop or bedroom, and then use it as a surround speaker for the Beam Ultra in the living room. When out of range of the soundbar, the speaker reverts to its individual audio capabilities. Sonos's approach to wireless rear speakers is distinct from competitors like JBL and Sony, who also offer similar products. What sets Sonos apart is the ability of a rear speaker to function as both a Bluetooth portable speaker and a Wi-Fi-connected smart home speaker. For example, a Play speaker, which is resistant to water and dust (IP67 certified), can be used in areas like a shower or by a pool without damage. The cost of the system varies depending on the components used. A Beam Ultra paired with two Era 100 speakers costs $1,137 but requires the speakers to be permanently plugged into an outlet. A Beam Ultra paired with two Play speakers costs $1,300 and offers greater portability. This feature is especially useful for people with smaller living spaces, allowing them to use rooms for multiple purposes. During testing, the system was found to be easy to set up, with automatic positioning and calibration technology adjusting speaker placement and room acoustics without user intervention. For advanced Sonos users with multiple rooms and soundbars, this feature can be particularly helpful, especially in rooms that lack a full home cinema setup. People living in studio or one- or two-bedroom apartments may also benefit, particularly during moves, as they can create a home cinema setup using a compact soundbar and two portable speakers. This innovation challenges the traditional idea that home cinema speakers must be used for a single, fixed purpose.