Behringer FBQ2496 Professional Automatic and Ultra-Fast Feedback Destroyer/Parametric EQ Ultra-high performance 2-channel 24-bit/96 kHz Feedback Destroyer and Parametric EQ Automatically and "intelligently" locates and destroys up to 40 feedback frequencies Ultra-narrow FBQ filters for extremely effective feedback suppression, while keeping highest sonic quality Panic button immediately takes action in feedback emergency situations "Set-and-forget" default setting enables immediate and super-easy Feedback Destroyer performance