Rolls DU30b XLR Balanced Input RCA Unbalanced I/O Microphone Preamplifier 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.

Key Features

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

Technical Specifications

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