12-input small-format analog mixer with extremely low noise circuitry DFX, our 32/40-bit digital multi-effect processor with 100 programs plus tap delay, tone generator and foot switch jacks Two channels of monitoring from computer via USB 2.0 or FireWire interface Channel 9/10 routed to computer can be selected from main mix, ALT 3/4 and AUX 1/2 4 mono Mic/Line channels, 2 stereo channels, 2 stereo AUX returns, 2 AUX sends 3-band EQ on each channel strip 75 Hz low-cut filter on mono channel Inserts on channels 1 & 2 +48V phantom power on mic channels Stereo AUX send 1 cue for monitoring individual channel Master AUX section with EFX to Monitor Extra ALT 3-4 stereo bus Control room/Phones source matrix Balanced master output with 60 mm fader control High-volume headphone output Compatible with Mac OSX and Windows XP, Vista & 7 Steinberg"s Cubase LE digital audio workstation software included The Helix Board 12 Plus is part of the new generation of Phonic"s popular Helix Board mixers. It features 96 KHz USB 2.0 and FireWire interfaces that let you stream up to 10 independent channels of audio to the computer and return two channels to the mixer for monitoring - all with near-zero latency. Pre/Post switches on each input channel allow users to adjust the outgoing USB 2.0 / FireWire signal between a pre-EQ, pre-fader, pre-low cut, to a "post" signal. An onboard 32/40-bit digital multi-effect processor provides 100 popular programs, tap delay and a foot switch jack. Additional features include two AUX sends, two stereo AUX returns, balanced stereo main outs, master AUX section with EFX to monitor, control room/phones source matrix and Steinberg"s Cubase LE 4 digital audio workstation software.