The PR 4093 preamplifier is a compact and efficient audio control solution designed for public address and music distribution systems. It features 6 balanced XLR inputs with selectable MIC/LINE sensitivity and phantom power, plus 3 stereo unbalanced inputs via RCA connectors. Input 1 includes a priority function triggered by a VOX circuit, making it ideal for announcements. The unit provides 3 outputs: a stereo XLR with tone control (LOW, MID, HIGH), a mono jack output, and a dedicated MIC output. Additional outputs for recording devices are available on RCA connectors. Front-panel signal LEDs and output level indicators offer real-time status monitoring. With support for both 230V AC and 24V DC emergency power, the PR 4093 ensures continuous performance in critical applications.
Features
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6 balanced XLR MIC/LINE inputs with phantom power (18–21 V DC)
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3 unbalanced stereo RCA inputs for external audio sources
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SIGNAL presence LED for each input channel
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VOX-activated priority function on input 1
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Front-panel tone controls (LOW, MID, HIGH) for output adjustment
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3 output options: stereo XLR, mono jack, and MIC jack
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Dedicated RCA output for recording device connection
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Output level LED indicator
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Operates on 230V AC and 24V DC emergency power supply
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Passive convection cooling and front panel configuration
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Compact 1U rack-mount metal chassis in black finish
Specifications
Frequency Response (-3 dB) | 20 Hz ÷ 22,000 Hz |
Crosstalk | < -68 dB |
Distortion (THD+N) | < 0.03% @ 1 kHz nominal power |
Total Number of Inputs | 9 |
Balanced Inputs | 6 (XLR, MIC/LINE with phantom power) |
Unbalanced Inputs | 3 (RCA stereo) |
Mono Inputs | 6 |
Stereo Inputs | 3 |
VOX Function | Yes (on input 1) |
Phantom Power Supply | 18 V DC – 21 V DC |
Total Number of Outputs | 3 |
Output Connectors | XLR, ¼” jack, RCA |
Tone Controls | Yes (LOW, MID, HIGH – front panel) |
Configuration Controls | Front panel |
Cooling Method | Convection |
Operating Voltage | 220-240/115 V~ 50/60Hz |
Voltage Selection | Internal |
DC Power Support | Yes (24 V) |
Power Consumption (Max) | 18 W |
Safety Compliance | CE compliant |
Cabinet/Case Material | Metal |
Color | Black |
Rack Mounting | 19″, 1U |
Height | 44 mm / 1.73 inches |
Width | 483 mm / 19.02 inches |
Depth | 195 mm / 7.68 inches |
Weight | 2.8 kg / 6.17 lbs |
Package Height | 95 mm / 3.74 inches |
Package Width | 540 mm / 21.26 inches |
Package Depth | 265 mm / 10.43 inches |
Package Weight | 3.6 kg / 7.94 lbs |
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