12-channel Compact Mixer with onboard effects and USB I/O. 6 low-noise, high-headroom Mackie mic preamps with easy LED metering 32-bit RMFXTM processor with 16 "Gig-Ready" reverbs, choruses and delays Precision 7-band graphic EQ for tuning Mains or Monitors USB I/O for recording shows and music playback via Mac or PC 4 full stereo channels plus extra stereo return for keyboards, external effects or stereo playback devices 60mm faders for input channels, returns and Main/Monitor masters 3-band active EQ (80Hz, 2.5kHz and 12kHz) on all channels Hi-Z input for direct connection of guitar, bass and other instruments Insert, 100Hz low cut filter, and 48V phantom power on all mic channels