Inter-speaker connectivity

Pairing two StormBox Mini+ units for stereo is reported to be straightforward and stable, creating a more immersive left right spread, though this review notes that using the 3.5 millimeter aux input disables Bluetooth and therefore prevents dual speaker stereo when listening over a wired connection.

The Move 2 integrates into Sonos multi-room setups and can be stereo paired with another Move 2 over Wi-Fi, and reviewers note it can rebroadcast Bluetooth or line-in sources to speakers such as the Sonos Arc, though it cannot act as a home-cinema rear, bond with a subwoofer or form a stereo pair with the original Move.

Two Charge 6 units can be linked for stereo and, thanks to Auracast and JBL’s newer PartyTogether-style features, it can join compatible JBL and other Auracast-enabled speakers in very large, even effectively unlimited, multi-speaker setups, though it still cannot connect wirelessly to older PartyBoost-only models.

The Wonderboom 4 supports simple inter speaker connectivity via button presses, letting you Double Up with another Wonderboom 3 or 4 either for a louder shared playback or as true left right stereo speakers that reveal more detail than a single unit, though it still does not integrate into broader multi speaker PartyUp style groups.

Bose’s SimpleSync and related features let the SoundLink Max join compatible Bose speakers or soundbars for grouped playback, and reviewers note that connecting two Bose portables to one device is an easy way to boost coverage for parties and outdoor spaces.

Party Link allows the Bounce to connect with other compatible LG speakers for multi speaker playback, though managing and disabling these sessions still depends heavily on the ThinQ app.

The Flex 2 can pair with another Flex 2 in stereo or party mode and sync with select Bose speakers to boost coverage and volume, but you are limited to two speakers at a time, cannot mix the new model with the original Flex and several reviewers describe the overall ecosystem as more restrictive than they would like.

Earlier LS50 Wireless models relied on a wired Ethernet link between the two speakers, but the LS50 Wireless II add the option of a wireless inter-speaker connection for cleaner setups while still allowing a wired P/S cable when users want maximum-resolution 24/192 playback.