Sound great virtually anywhere with the ultra-portable Bose S1 Pro multi-position PA system. Designed for musicians, DJs and general PA use, the S1 Pro is the ultimate all-in-one PA, floor monitor, practice amplifier and primary music system. Multiple positions, supported by Auto EQ, ensure that you always sound your best. Plus, with the optional rechargeable lithium-ion battery (sold separately), you can perform anywhere for up to 11 hours. And with a 3-channel mixer, reverb, Bluetooth streaming and ToneMatch processing onboard, the S1 Pro is ready to be your go-to PA.