The impressive loudspeaker and subwoofer collection - more than 200 strong - to provide true in-the-round coverage on the current Metallica tour. Eight line arrays are Meyer Sound MILO topping smaller MICA modules, surrounding a TM Array made up of with 40 Meyer 700-HP subwoofers. Apogee A/D and D/A converters are on each end of a FiberPlex LightViper fiber optic transport system for an all-digital signal path.