" Introducing the ALTO TS415, a 2500W powered speaker from the TS4 Series. TS4 builds upon the legacy of our best-selling TrueSonic speakers, bringing powerful, clear sound and next-gen Bluetooth functionality including streaming, control (via the FREE ALTO app), and True Stereo Wireless linking. Free ALTO app for set-up 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 selection. Simple Bluetooth Streaming and Linking TS4’s built-in Bluetooth connectivity makes it easy to stream directly from a device. and with the True Wireless Stereo function, you can stream to two TS4 speakers in stereo without the need for any cables. Integrated 3-channel mixer Every TS4 features an integrated 3-channel mixer, with two Mic/Line input channels and a dedicated Bluetooth channel. Sound great in every room TS4’s 3 preset DSP 6.3""Speaker Use"" modes optimize the speaker for any application. For even more control over the sound, a Custom EQ can be set up within the ALTO app and saved directly to the TS4 speaker. Ready for anything - compact, versatile design Each speaker features a lightweight, sleek, black box design that can be used as the application demands - freestanding, as a wedge monitor, pole-mounted, or suspended via the integrated suspension points. "