Redback A4422A 4 Channel PA Mixer with Bass & Treble Control
Professional Installation Mixer with Priority VOX Muting & Phantom Power
Reliable Mixing for Professional PA Installations
The Redback® A4422A 4 Channel PA Mixer is purpose-built for professional public address installations. Ideal for shopping centres, gymnasiums, places of worship, courtrooms, schools, and commercial facilities, this compact half-rack mixer delivers flexible input configuration, priority muting, and precise tone control in a dependable installation-ready design.
With configurable mic/line inputs, selectable phantom power, and adjustable VOX muting, the A4422A provides complete control over background music, paging, and emergency announcements.
Key Features
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4 Configurable Inputs
Each channel selectable for balanced mic or line level input.
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Individual Bass & Treble Controls per Channel
Tamper-proof, screwdriver-adjust tone adjustment for installation security.
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Balanced 1V Output
Via 3-pin euro block screw terminals for professional connectivity.
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Selectable Phantom Power (15V DC)
Supports condenser microphones when required.
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Adjustable VOX Priority Muting
Two priority levels for automatic background music muting during announcements:
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Input 1 (Priority 1): Mutes inputs 2–4
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Input 2 (Priority 2): Mutes inputs 3–4
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Selectable Mic or Auxiliary Mute Function
Enables telephone paging, radio microphones, or emergency tones to override background audio.
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Dual RCA Line Inputs
Internally mixed to mono for simple integration.
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24V DC Operation
Includes power supply for convenient installation.
Ideal For
- Shopping centres
- Schools & universities
- Churches & worship spaces
- Courtrooms
- Fitness centres
- Commercial buildings
- Public facilities
Technical Specifications
Inputs
- Mic: 3-pin euro block (balanced)
- Line: Dual RCA
- Input Sensitivity:
- Mic: 3mV / 100mV balanced
- Line: 100mV / 1V
- Phantom Power: 15V DC selectable
Outputs
Frequency Response
- Mic: 30Hz – 15kHz (-3dB)
- Line: 30Hz – 23kHz (-3dB)
Power
- 24V DC via 2.1mm DC jack or screw terminals
- Power supply included
Dimensions
Rack Mounting
For 19” rack installations, use the Redback H4990 rack mounting bracket. Optional H4992 metal or H4993 plastic infill panels are available for clean single-unit installations.
Why Choose the Redback A4422A?
Designed specifically for fixed PA installations, the A4422A delivers dependable performance, flexible priority control, and easy configuration in a compact half-rack format. It’s a practical, professional solution for environments requiring controlled background music and clear announcements.
