The Anchor Audio BEA2-XU4 is a Beacon 2 portable line array tower with Bluetooth, an AIR wireless transmitter, and two dual wireless microphone receivers. With 150W of rated output power driving eight 4" neodymium speakers and three 8" woofers and a neodymium compression driver to produce 120 dB SPL, it is designed to deliver versatile and powerful amplification for crowds of up to 2500 people in sports venues, educational facilities, and various indoor and outdoor events.The built-in Bluetooth receiver allows streaming of music from your smartphone, tablet, or laptop. Two XLR-1/4" combo jacks, a 1/4" line input, and a 3.5mm stereo mini jack provide connectivity for wired mics, instruments, line-level sources, and non-Bluetooth devices. Connect up to four wireless mics (available separately) via the two included dual wireless microphone receivers. The balanced 1/4" output can be routed to another PA system or an audio recorder. Integrated mixer functions include volume controls and 2-band equalization. The supplied AIR wireless transmitter enables cord-free connection to a compatible companion speaker. Power the Beacon 2 via AC power or the built-in rechargeable lithium-ion batteries, which offer approximately six to eight hours of operating time on a single charge. The integrated carry handle and heavy-duty rolling wheels simply transport of the system.