The Dual Wireless Streaming feature in the Bose Music app lets you play Bluetooth audio from both the system and another compatible Bose system at the same time in either dual mono or stereo. You can access this option from the Settings menu.\rCompatible systems include:\rBose S1 Pro+ Wireless PA System\rBose L1 Pro8 & L1 Pro16 Portable Line Array System\rBose L1 Pro32 Portable Line Array\rMore systems may be added periodically.