STELLAR SOUND AND MASSIVE POWER: The combo set includes 4 x ZETHUS-210B line array PA speakers. The ZETHUS-210B is a compact line array speaker which delivers superior sound quality with two 10" woofers and two titanium compression drivers. Each of the speakers comes with 550W RMS, 2200W peak (16-ohm) extraordinary power handling capability GREAT FLEXIBILITY: Full range / passive bi-amp mode switchable for either quick connection or professional set up STURDY CONSTRUCTION: Housed in an all birch plywood enclosure, with heavy duty metal grill and aluminum extrusion rigging hardware, it holds up to mobile applications with rugged construction VERSATILE APPLICATIONS: Ideal for small to medium-sized venues including live sound, clubs, bars, restaurants, churches and schools etc.