The incredible sound of the DRS-12BLU is defined by its highly efficient and articulate 800W Class-D amplifier. This relatively new design in power amplifiers is a proven success in the professional audio world for several reasons: Class-D directs nearly all of the signal directly to the transducers rather than causing waste through heat dispersion as in other amplifiers. The Class-D circuits react faster to signals and can render fast transients and sonic elements with more clarity and realism. Class-D also creates near-zero distortion regardless of the volume level. Bluetooth wireless connectivity and a USB/SD MP3 Player are directly built into the DRS-12BLU so that you have options for track playback and connectivity.Each element in the DRS-12BLUs transducers is designed to create the ideal listening experience. The 2 way speaker is composed of a large 12” woofer and powerful 2” voice coil needed to push low frequencies nearing 52Hz around the room with punch and definition even at high decibel levels. The lightweight amplifier and ABS nylon fiber cabinet make the DRS series of speakers easy to carry to and from an event and sufficiently rugged enough for consistent use.On the back panel of the DRS-12BLU are XLR, Line, and RCA inputs with separate gain and EQ controls as well as a Mix Output.With all of the details about accurate sound and controls you’d assume the DRS-12BLU was in another league when it comes to its cost.