The Yamaha MSR400 Powered Speaker is a biamplified, 2-way system featuring 400W maximum burst power driving a 12" cone woofer and 1-3/4" voice coil compression driver. Frequency division is accomplished prior to the amplifiers via a line-level electronic crossover, eliminating problems with loss, distortion, and phase. Power is optimally assigned to the low- and high-frequency units for smooth, natural balance across the spectrum. The Yamaha speaker accepts nominal input levels from -36dB to +4dB, meaning you can connect any source from microphones to pro line-level gear directly. Three parallel connections are provided--2 XLR-type connectors and one balanced phone jack--which can be used either as inputs or parallel outputs. The Yamaha MSR400 speaker cab has input level control for matching with the source signal, low and high EQ controls, and a sleek appearance round out the great features of this speaker cab. Stackable, flyable, and polemountable. Don't forget the bottom end. The MSR800W powered subwoofer (sold separately) is the perfect companion to this active PA speaker.