Roland BA-330 PA System， Black<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> All-in-one portable digital PA system suitable for use anywhere with powerful high-quality stereo sound for audiences of up to 80 people </span></li><li><span class="a-list-item"> No setup required， just plug in and go! Powered by AC power or eight AA batteries. </span></li><li><span class="a-list-item"> Four custom-designed 6.5" speakers and two tweeters for wide stereo projection with built-in effects: EQ， reverb， delay， and wide (on/off per channel) </span></li><li><span class="a-list-item"> Four-channel configuration: two channels for mic/instruments plus two channels for stereo inputs， Stereo Aux input with dedicated volume-control knob </span></li><li><span class="a-list-item"> Advanced Intelligent Anti-Feedback function </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51HFOHlIZIL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51lpigbaXML.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41%2BQKK6oDJL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51LrtMniVYL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31Pj7ACNZLL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51ZUfRQE9%2BL.jpg" noproxy>