Alto Professional Zephyr ZMX164FXU 16-channel, 4-bus mixer features 10 ultra-low microphone inputs with balanced TRS jacks and instert points, a three-band EQ with a sweepable mid frequency on 8 channels, and four channels of stereo inputs with 4-band fixed EQs. Alto Professional Zephyr ZMX164FXU also comes loaded with 16 variations of 16 professional digital effects including room and space delays, small and large hall acoustics, plate and spring reverbs, flangers, chorusus and more. ZMX164FXU also features a USB port that streams two channels of 24-bit audio out to your computer (Main Mix or Sub Mix 1/2) allowing you to record band rehearsals, club gigs, speaking engagements, worship meetings, and any other live performance reinforcement sitation.