BEHRINGER FBQ3102HD. 2-channel studio multi-band stereo graphic equalizer with 31 equalization bands, FBQ feedback detection system, Ultra-Low Noise 4580 operational amplifiers, Input/Low Cut/High Cut commands on each channel, 12-segment Input/Output LED meter, balanced servo inputs and outputs via XLR and TRS jack, Sub mono output via XLR
with crossover frequency control.