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Shure DFR22

Two Channels. A Powerful Processor. The Shure DFR has quickly become the industry standard for effective feedback reduction. The DFR22 builds on that reputation to provide an affordable full-featured 2x2 audio processor with drag-and-drop software.

The DFR22 is ideal for installed sound reinforcement applications, such as houses of worship, theaters, and meeting facilities.

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Category: Pro Audio:Processing:Feedback Supression


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DFR22 is also a powerful setup tool in live music applications. Using the DFR22s drag-and-drop graphical user interface, processors can be placed anywhere in the signal path.

Product Features:
  • DFR Automatic Feedback Reduction
  • Parametric and Graphic Equalizers
  • Cut/Shelf Equalizer
  • Compressors/Limiters
  • Automatic Gain Control
  • Gate/Downward Expander
  • Ducker
  • 2-Way Crossover
  • Subwoofer Processor
  • Splitter
  • Delay Processors
  • 2x2 Matrix Mixer

Product Specifications:
  • Frequency Response: 20 Hz to 20 kHz +/- 1 dB
  • Dynamic Range: 110 dB minimum, A-weighted, 20 Hz to 20 kHz
  • Sampling Rate: 48 kHz
  • Digital-to-Analog, Analog-to-Digital Conversion: 24 bit
  • Impedance

    Input: 10 kilohms
    Output: 120 ohms

  • Input Clipping Level: +24 dBu minimum
  • Output Clipping Level

    +24 dBu
    +12 dBu (with 12 dB pad)
    +6 dBu (with 18 dB pad)

  • Total Harmonic Distortion: < 0.05%, +4 dBu, 20 Hz to 20 kHz
  • Propagation Delay from Input to Output: <1.5 ms
  • Polarity: Input to output: non-inverting (inverting optional)
  • Operating Voltage: 100 to 240 Vac, 50/60 Hz (auto-switching), 1 A, maximum
  • Maximum Power Drain: 45W
  • Temperature Range

    Operating: -7 degrees to 49 degrees C (19 degrees to 120 degrees F)
    Storage: -29 degrees to 74 degrees C (-20 degrees to 165 degrees F)

  • Dimensions: 482.6 mm x 247.7 mm x 44.4 mm (19 in. x 9.75 in. x 1.75 in.)
  • Weight: 2.83 kg (6.25 lbs)