The Thump speakers by Mackie are tried and true in the PA world. Fantastic sound, high quality and very durable. All that you could ask for! 1300W system power Dynamic Bass Response technology delivers amazing lows at all volumes Built-in 2-channel Wide-Z mixer accepts mic, line and instrument signals Four Application-specific speaker modes for instant system optimization Completely redesigned professional enclosure designed for heavy use.Flexible mounting options including tripod and pole mounting Delivering proven, chest-thumping low-end in an extremely affordable package; the 1300W Thump15A 15” Powered Loudspeaker has been redesigned from the ground up to sound better than ever. Thump features an all-new amplifier design with Dynamic Bass Response for chest-thumping low end. Plus, the flexible built-in 2 channel mixer features Vita preamps with Wide-Z technology that handle mic, instrument or line signals with ease. Application specific speaker modes let you dial in the system at the push of a button. And with an all-new professional enclosure and robust system protection, you can walk into your next gig with confidence.