The Behringer FBQ2496 Feedback Destroyer Pro features an exceptionally quick feedback detection algorithm that detects and suppresses feedback within 0.2 seconds. Designed for live performance venues the 2-channel FBQ2496 offers balanced inputs and servo-balanced outputs along with extensive MIDI implementation and user preset memories. Thanks to Behringers “Search and Destroy” algorithm the system automatically detects up to 20 problematic frequencies. By using super-tight notch filters the FBQ2496 is able to combat feedback leaving your signal unaffected. Feel free to choose between manual and auto-mode. Selecting manual allows you to tweak up to 40 filters adjusting frequency bandwidth and gain.