BEHRINGER PMP580S 500-Watt 10-Channel Powered Mixer with Klark Teknik Multi-Fx Processor Compressors Black Ultra-compact 2 x 250-Watt stereo powered mixer Revolutionary Class-D amplifier technology: enormous power, incredible sonic performance and super-light weight 8 Invisible IMP mic preamps with switchable +48 V phantom power for condenser microphones Ultra-high quality KLARK TEKNIK FX processor with 25 presets including reverb, chorus, flanger, delay, pitch shifter and various multi-effects Studio-grade compressors with super-easy one-knob functionality and control LED for professional vocal and instrumental sound