Behringer Ultragraph Pro FBQ3102
Its amazing patent-pending FBQ Feedback Detection System instantly detects feedback frequencies and can also be used as an audio analyzer, making the FBQ3102 a welcome addition to every touring setup. Adding some extra oomph to your music is made easy with the dedicated mono subwoofer output with adjustable crossover frequency. You can effortlessly remove unwanted frequencies such as floor rumble and tape hiss by utilizing the additional sweepable high and low cut filters for each channel, and level setting is a snap with the highly accurate 12-digit LED input/output metering and input gain control.