Features Includes: QSC K12 12" Powered Loudspeaker Pair QSC KSub Subwoofer Pair M20 Pole Pair Owners Manuals USA Plug Power Cables & Cable Ties Description Product Description The QSC K Series is quite simply The New Standard in lightweight powered loudspeaker systems. Under the direction of Pat Quilter, QSC's team of amplifier engineers have created a new standard in Class D power modules unparalleled in the industry. Next, breaking from the traditional loudspeaker paradigm, every model is fitted with the identical 1.75" HF device (fullrange models) and woofers of the same high quality for unparalleled performance, regardless of speaker size.