The Alto TS415 is a 2,500W 15-inch 2-way powered speaker with Bluetooth, DSP and App control. 2500W for powerful performance FREE Alto App (iOS/Android) for remote configuration and control Bluetooth audio streaming direct from device On-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 XLR -inch combo inputs, mic/line switches and independent level controls XLR Mix output, Speaker Use, and Sub Size Controls 15 driver, 2.5 (63 mm) high-temperature voice coil 1 exit ceramic driver with 1.4 (35 mm) coil Lightweight enclosure for easy transport, set up and installation Versatile design - pole-mountable, wedge monitor or flown application with integral M6 suspension points Powerful and efficient class D amplifiers with fanless cooling design to run cleaner, quieter and with greater long-term reliability Designed and tuned in the US TrueSonic TS4 from Alto ProfessionalLouder.