Class-D amplifier with Dynamic Bass Response provides chest-thumping power Built-in two-channel mixer offers the ultimate flexibility Advanced features for total system optimization Portable design for easy setup and transport Mackie Thump15A Features: 1,300 watts of high-output power in a portable package Class D amplifier with Dynamic Bass Response yields chest-thumping low end that's ideal for DJs and electronic musicians 15" low-frequency driver and 1.4" titanium dome compression driver Built-in 2-channel mixer features Vita preamps with Wide-Z technology that handle mic, instrument, and line-level signals XLR thru output for wired connection to other Thump speakers Integrated precision crossover and transducer time-alignment deliver outstanding sound quality 4 application-specific speaker modes ensure outstanding sound quality in every situation Robust system protection and thermal limiting keep your system safe Flexible mounting options allow tripod-mounting, pole-mounting, and stage monitor use Compact and lightweight for easy setup and transport Housed in a tough, road-ready enclosure Only 2 available for same price.... I will take offers