Samson Auro D415 2-Way Active Loudspeaker Compact, lightweight 2-way active loudspeaker system, 15-inch extended range low frequency driver, 1.34-inch (34mm) compression driver with 1-inch exit 400 watts of output power, XLR mic input, 1/4-inch line input Volume control, 2-band equalizer (Bass and Treble Controls, Line output allows daisy chaining of additional speakers Built-in Optimax compressor/limiter with two-stage speaker protection, 1-3/8-inch pole mount receptacle, Two oversized ergonomic carry handles Dual-angle floor monitor positioning options, Solid polypropylene construction