Alto 2000 Watt (peak) Active Speaker with Bluetooth (Single) Alto TS408 Active Bluetooth PA Speaker. Where TS3 exceeded expectations, Alto TS4 redefines them completelyBuilding on the legacy of our best-selling TrueSonic speakers, the TS4 Series delivers increased power, clearer sound, and advanced Bluetooth functions including streaming, speaker linking, and App control. Compact, lightweight, and designed for reliability, the new TS4 Series makes it simple to get great live sound at every event. Whether you need a powerful vocal PA or club-shaking bass performance for a DJ set, TS4 speakers deliver loud, clear, room-filling sound for any application. With an 8-inch woofer, and a 1.4-inch compression driver, TS408 delivers 2000W of class-leading power and clarity in equal measure. FREE Alto App for remote configuration and control Available free for both Android and iOS, the Alto App gives hands-on remote control over Bluetooth levels, Speaker Use Modes, Custom EQ and Sub Size selectio