Bose Pro Audio Auditorium Sound System 2 Bose 402 IV Loudspeakers, Bose MB4 Sub, Panaray Digital Controller, QSC GX3 Power Amplifier System Includes: (2) Bose Panaray 402 Series IV Loudspeakers and (2) Bose SB-4 Brackets (1) Bose Panaray MB4 Modular Bass Loudspeaker (1) Bose ControlSpace SP-24 Digital Controller (1) QSC GX3 Power Amplifier