Alto Professional ZMX164FXU | 16-Channel 4-Bus Mixer with 24 Inputs, USB I/O & 256 On-Board Effects 28 total inputs 3-band EQ with swept mid on microphone channels 4-band fixed EQ on stereo line channels 4 AUX sends per channel: 2 PRE/POST faders switchable 24-bit Alesis DSP effects for 256 choices (16 presets  16 variations)