The Samson Expedition XP310w Rechargeable Portable PA answers the call of those who need great-sounding mobile audio. With 300 watts of power, 12 hours of battery life, a top-mounted 4-channel mixer and Bluetooth, the XP310w delivers huge sound to musicians, DJs or those enjoying a variety of outdoor events. It also includes a frequency-agile wireless microphone for cord-free performance. The XP310w operates for up to 12 hours continuously via its built-in rechargeable lithium ion battery. Its lightweight Class D amplifier delivers 300 watts of power to a 2-way speaker system with a 10 inch. woofer and 1 inch. tweeter. This is all housed in a rugged polypropylene enclosure with a steel grille that weighs 27.5 pounds. And with a locking telescopic handle and smooth rolling wheels, transporting the XP310 is as easy as it gets. Plus, a 1-3/8 inch. speaker stand receptacle allows the XP310w to be mounted using any standard speaker stand. Equipped with a top-mounted 4-channel mixer that includes XLR, 1/4 inch. and 1/8 inch. inputs for connecting microphones and line level devices, the XP310w makes for quick and easy setup. The speaker can also stream music wirelessly from any Bluetooth device. A variable reverb control adds depth, and a voiceover ducker automatically lowers the music when speaking or singing into a microphone (XLR or wireless inputs). In addition, a master 2-band EQ is provided to adjust the tonal characteristics of the XP310w, as is a line output to daisy-chain additional speakers. Perfect for multi-performer vocal and speech applications, the XP310w is capable of handling up to three wireless systems simultaneously. The XP310w comes with a single Concert 88a Handheld Frequency-agile UHF Wireless System that offers up to 300' of operation. An extra wireless receiver slot is included for adding a second Concert 88a Series wireless system (sold separately), while the USB wireless port allows you to also integrate an XPD Series USB Digital Wireless System (sold separately). Features include: · All-in-one portable PA system that weighs 27.5 lbs. · Internal rechargeable lithium ion battery for up to 12 hours of continuous use · Bluetooth connectivity to connect wireless music sources · Includes Concert 88a Handheld Frequency-agile UHF Wireless System (300-foot operating range) · Extra wireless receiver slot for adding an additional Concert 88a Series wireless system (sold separately) · 2-way speaker enclosure with 10 inch. woofer and 1 inch. tweeter Class D amplifier produces 300 watts of Peak power · Top-mounted 4-channel mixer with 2-band (Bass and Treble) EQ · Independent volume controls on each channel · XLR-1/4 inch. combo selectable mic/line input for microphones and line level devices · 1/8 inch. (3.5mm) input for stereo line level devices (MP3 players, keyboards, etc.) · Variable reverb control for mic/wireless i