\rHi JimV:
It depends on your enabled device if it has the ability to sync up with multiple Bluetooth Devices at the same time. There are some hubs out there. The BOM4.1 and now the BOM4.1.2 were created so you could connect at a minimum two pair of speakers. Like two pair of AP525 are a perfect combo. The internal stereo amps are rated at 4-ohm so you could do four pair of RX-550 rocks or four pair of LS3 pendant speakers. Like other Bluetooth it is a closed system but the multiple channels are available after the Receiver, so there are more options built around an 100 Watt 8" Subwoofer.
TimL/5-3-2020\r