From Google AI:

The Behringer Feedback Destroyer Pro DSP1124P is a popular 2-channel digital parametric equalizer and feedback suppressor. It automatically searches for and suppresses troublesome feedback frequencies using ultra-narrow notch filters, while also functioning as a versatile 24-band parametric EQ for precise audio shaping. Core Features

• Intelligent Feedback Suppression: Automatically locates up to 12 feedback frequencies per channel and sets incredibly narrow filters to remove the noise without ruining the rest of your tone.
• Filter Modes:
• • Single-Shot Mode: Detects feedback and locks the filter into place until it's manually reset.
  • Auto Mode: Continuously monitors the audio and automatically resets filters as the sound dynamically changes.
  • Manual Mode: Lets you set up to 2 x 12 fully parametric filters, allowing you to manually adjust frequency, bandwidth, and gain.
• Hardware & Connectivity: Built as a rack-mountable unit equipped with 24-bit A/D and D/A converters. It features servo-balanced, gold-plated XLR and 1/4-inch TRS connectors, as well as MIDI implementation.
• Software Control: Behringer offers design software for PC that allows total remote control over the unit.