Xtreme is an AC powered sound system that delivers a powerful 123dB of crystal clear speech projection to audiences of up to 2,500 people - that’s louder than a rock & roll band! FEATURES: 123 dB SPL from 130W Amplifier and High Efficiency Speaker, Speech Projection Switch, XLR Balanced Output, 1/4” Line Input, XLR Balanced Mic/Line Switchable Input with Switchable Condenser Mic Power, XLR Balanced Input with Condenser Mic Power, Bass and Treble Controls and Speakon output for XTR-6001.