Allen & Heath- AR2412 Main AudioRack Remote Stage BoxAR2412 is a 48kHz, 24 XLR input, 12 XLR output AudioRack, compatible with Qu, Avantis and SQ mixers, and with the AHM audio matrix processors. 24 Mic Preamps +60dB of gain with 20dB pad for line level sources. 12 Line Outs Balanced, relay protected line outputs on XLR. Expander & Monitor Ports Dedicated ports for connection to an AR84 or AB168, and to the ME Personal Mixing System. Plug and Play No configuration required, just connect to your mixer