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Rolls DU30b Mic-Preamp/Audio Ducker

Model: DU30b

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  • Usually Ships in 2-3 Days 
  • Not yet reviewed

About: Rolls DU30b Mic-Preamp/Audio Ducker

The DU30b is a microphone preamp and background music preamp. When an announcement is made into the microphone, the music is automatically "ducked" under the announcement. Then the music is brought back to it's previous level.


  • Automatically ducks music under announcements
  • Perfect for restaurants and small clubs
  • * Clean, Quiet Mic Preamp


  • Input Impedance: 100K Ohms unbalanced, 600 Ohms balanced
  • Frequency Response: 20 Hz - 40 kHz
  • THD + Noise: < 0.03% typical
  • Noise Floor: -78 dB
  • Indicators: Power LED
  • Input/Output jacks: XLR balanced Input, RCA unbalanced input and output
  • Size: 4" x 4" x 1.5"
  • Weight: 1 lb. (.5 kg)
  • Power: 12 - 16 VDC 50mA, 5 x 1.2 mm DC Jack - Center Negative

UPC: 675889000306 is a Canadian authorized Rolls retailer.

Reviews: Rolls DU30b Mic-Preamp/Audio Ducker

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Warranty: Rolls DU30b Mic-Preamp/Audio Ducker Warranty:

30 Days

Manufacturer's Warranty:

Rolls Accessories
Limited 1-year warranty parts and labor.

Rolls Rack Units: (Mixers, Amplifiers, Processors)
Limited 1-year warranty parts and labor.

Rolls Signal Sources
90 Days warranty parts and labor.

RFX Units
Limited 3-year warranty parts and labor.

Limited 1-year warranty parts and labor.