By: Shure
Microphones, Headphones & Wireless systems
Contact us for lowest price (800) 284-2288, (858) 565-1101,, or fax (858) 300-4193
Professional Reference Headphones
The Shure Mixer & DSP Series DFR 22 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.

Two Channels. A Powerful Processor. The DFR-22 is ideal for installed sound reinforcement applications, such as houses of worship, theaters, and meeting facilities.

DFR22 is also a powerful setup tool in live music applications. Using the DFR22®s drag-and-drop graphical user interface, processors can be placed anywhere in the signal path.
DFR Automatic Feedback Reduction
Parametric and Graphic Equalizers
Cut/Shelf Equalizer
Automatic Gain Control
Gate/Downward Expander
2-Way Crossover
Subwoofer Processor
Delay Processors
2x2 Matrix Mixer
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
Input Impedance 10 kilohms
Output Impedance 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
Operating Temperature -7 degrees to 49 degrees C (19 degrees to 120 degrees F)
Storage Temperature -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)

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Prices and specifications subject to change without notice.