Free Express Shipping! Yorkville Sound CA1 Coliseum Series 70V Installation Amplifier 6-Channel / 4-Zone 180W Amplifier, Drives 4-Ohm Speakers / Four 70V Systems, 1/4" Mic Input with Voice Priority, 3 x XLR-1/4" Mic/Line Inputs with 24V, 2 x 2RCA...