There's a QSC amplifier inside each HPR Now you can get the legendary performance and reliability of QSC's rack mount amplifiers built into a powered loudspeaker. The power module is designed with . . .
For high-level dance music or reinforcement of bass instruments and kick drum, an HPR series subwoofer will add low-frequency extension and power to any sound system. The HPR181i single 18" subwoofer offers truly impressive low frequency extension . . .