Mackie PROFX4V2 4-Channel Compact Mixer with Effects 4 low-noise Mackie Vita mic preamps add life to any input ReadyFX effects engine with 16 effects including reverbs, delays, and choruses 5-band graphic EQ for tuning mains or monitors. Tough ABS side protection Aux output for monitor mixes, venue 70-volt systems, and more 3-band EQ and 100Hz low-cut filter on all channels