DBX AFS224 Advanced Feedback Suppression Processor

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The AFS 224 Advanced Feedback Suppression processor was designed to provide feedback elimination processing with a powerful DSP module and the user interface, the AFS 224 provides all the processing and control for both installation and live use.


  • dbx's Patent-pending (Advanced Feedback Suppression) AFS™ technology

  • 24 Programmable Filters per Channel

  • Stereo or Dual Independent Channel Processing

  • Live and Fixed Filter Modes

  • Selectable Filter Lift Times

  • Application-specific filter types include: Speech and Music Low, Med and High Input channel Metering

  • 24 LED per Channel Filter Metering

  • XLR and TRS Inputs and Outputs


Brand DBX
Model AFS 224


Type dbx Type IV™ conversion system
Color Black


Input Connectors 2 x 1/4" TRS (L/R)
2 x XLR Male (L/R)
Output Connectors 2 x 1/4" TRS (L/R)
2 x XLR Male (L/R)

Performance Data

Frequency Response 20Hz – 20kHz, +/- 0.5dB
Impedence Balanced >120Ω, unbalanced >60Ω
Signal/Noise 0.003% typical at +4dBu, 1kHz
Max Output Level +20dBu

Physical Information

Power 100VAC 50/60Hz, 120VAC 60Hz and 230VAC 50/60Hz, 9W
Dimensions (WHD) 1U 19" rack-mount
Construction Metal Enclosure

Special Features

Features Live & fixed filter modes


  • XLR Balanced Audio Cable (M-F) x 25'
  • XLR Balanced Audio Cable (M-F) x 50'
  • 1/4" Phono TS Speaker Cable (M-M) x 25'
  • 1/4" Phono TS Speaker Cable (M-M) x 50'


  • IEC Power Cord

Patch Cables

  • XLR Balanced Audio Patch Cable (M-F)