The Anchor Audio MEGA2-U4 is a MegaVox 2 portable PA system with Bluetooth and two dual wireless microphone receivers. With 20W of rated output power driving a high-efficiency, re-entrant horn driver to produce 119 dB SPL, it is designed to deliver powerful amplification in a compact housing for crowds of up to 1000 people in sports venues, public gatherings, and various outdoor events.The built-in Bluetooth receiver allows streaming of music from your smartphone, tablet, or laptop. Two 1/4" mic inputs and a 1/4" line input provide connectivity for wired mics, instruments, and line-level sources. Connect up to four wireless mics (available separately) via the two included dual wireless microphone receivers. The 1/4" line output can be routed to an audio recorder, while the 1/4" speaker output can power a MegaVox 2 companion speaker (available separately). Integrated mixer functions include volume controls for each source and a signal alert with adjustable level. Power the MEGA2-U4 via AC power or the built-in rechargeable lithium-ion battery, which offers approximately six to eight hours of operating time on a single charge. The integrated carry handle and pole mount simplify physical setup of the system.