Alto TrueSonic 4 Series TS415 2500 Watt 15" Powered Loudspeaker with Bluetooth Input, DSP, and iOS/Android App ControlThe Alto TS4 series loudspeakers are Features:2500 W peak (1600 LF + 900 HF) 1250 W continuous RMS (800 LF + 450 HF)FREE Alto App (iOS/Android) for remote configuration and controlBluetooth® audio streaming direct from deviceOn-board DSP with 4 Speaker Use modes (inc. Custom EQ via App)True Wireless Stereo speaker linking via Bluetooth®Integrated 3-channel mixer with dual XL..