The Bose S1 Pro System is a real all-rounder when it comes to reproducing music and speech in the highest quality, anywhere and at any time. The small, active all-in-one PA is extremely flexible with an integrated three-channel mixer, Bluetooth streaming from mobile devices, and the option of connecting up to two microphones or instruments. Whether it's a singer-songwriter performance, a meeting, a conference, a church service, or a party – with the Bose S1 Pro System, the intelligent ToneMatch signal processing automatically ensures the optimum sound at all times. Should there be no power outlet nearby, a rechargeable lithium-ion battery keeps the active Bluetooth speaker running wirelessly.