Amplifiers

This wall plate for microphone and line inputs features a balanced high level output converted from either input. The 3V signal is transmitted through Cat5e cable, allowing for distribution up to 300m without interference, to a compatible UTP receiver unit from Redback. The mic input uses a balanced XLR, while the line input can be connected through 2 x RCA sockets or 3.5mm audio jack for portable devices with a lower level output. Power is provided to the plate via UTP cabling.Use with Redback A4480B and A4432The wall plate allows for a local input source in a specific zone to override the overall input. This could include a mobile device for background music or a microphone for speeches at a wedding event.

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These modules are specifically engineered for incorporation into emergency evacuation systems. They require an external 24V DC power supply and support line level audio input, generating a 100V line output using a built-in transformer. The modules boast protection from short circuits, overloads, and thermal cutout, and are built on a durable steel chassis. Features Powered by 24V DC 100V line audio output Line level audio input Short circuit, overload and thermal cutout protection Bolt-in chassis construction Specifications Output Power: 60W RMS Current Draw: 3.8A at full load (100mA quiescent) Frequency Response: 45Hz - 12kHz Distortion: <0.3% SNR: -94dB Sensitivity: 600mV RMS Protection: 4A Operating temperature: -10°C to +60°C Dimensions: 210W x 170D x 85H

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This versatile Microphone/Line Pre Amplifier is designed to convert either a microphone or line input into a balanced high level signal. The mic input can be connected through a balanced XLR, while the line input can be connected through 2 x RCA sockets or a 3.5mm jack. The output signal, carried through Cat5e cable, can be distributed up to 300m without any interference. For even greater flexibility, the A 4928 line output box (or other Redback UTP compatible product) can be used to provide a balanced high or low level output, as well as an unbalanced Aux output signal to be routed to an amplifier. Power is conveniently provided through the Cat5e cable connection. In addition, a 24V DC switched output with a maximum current draw of 120mA can be activated when the VOX output of the pre-amplifier is in use.Use with Redback A4432When paired with A4432, this device allows for overriding the input to a specific zone using a local input source in that zone. This could include a mobile phone for background music or a microphone for speeches at a wedding. The wall plate and box offer connections for a 3 pin XLR microphone, dual RCA line level input, and a 3.5mm line level input for portable devices, providing a versatile range of options for input sources. Part of the Redback UTP Solutions Range.As a versatile addition to the Redback UTP solutions range, this product offers a variety of interchangeable transmitters and receivers. These allow for seamless connection of various audio signals between local zones and equipment racks. To find compatible items in the Redback range, consult the convenient connection matrix for this product. Specifications Input Mic Level Sensitivity: 3mV Input Line Level Sensitivity: 1V Music Input Line Level Sensitivity: 200mV Output Connector: RJ45 8P8C Input Connectors (Audio): 3 pin XLR balanced, 2 x RCA, 3.5mm JACK Dimensions: ~133W x 65D x 44H Weight: ~0.2 kg

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This pre-amplifier wall plate is versatile, accepting both microphone and line inputs and converting them to a balanced high level output. The resulting 3V signal can be transmitted up to 300m without interference via Cat5e cable, making it perfect for large spaces. The mic input is balanced XLR, while the line input offers options for both 2 x RCA sockets and a 3.5mm audio jack, making it compatible with a variety of devices. Power is conveniently supplied through the UTP cabling, making installation a breeze.Use with Redback A4480B and A4432This wall plate allows for overriding the input to a designated zone using a local input source within that zone. For example, a mobile phone can be used for background music or a microphone can be used for speeches at a wedding event..Part of the Redback UTP Solutions Range.Explore Redback's UTP solutions range, featuring a diverse selection of transmitters and receivers designed to seamlessly connect various audio signals between local zones and equipment racks. Refer to the connection matrix to identify which items in the Redback range are compatible with this product. Specifications Input Mic Level Sensitivity: 3mV Input Line Level Sensitivity: 1V Music Input Level Sensitivity: 500mV Output Connector: RJ45 8P8C Input Connectors: Audio: 3 pin XLR balanced 2 x RCA, 3.5mm JACK

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Hearing loop amplifiers are designed to improve the listening experience for individuals who use hearing aids. They are commonly installed in noisy public areas where those with hearing impairments may struggle to hear. Both models comply with AS60118.4-2007 and feature a compressor/limiter circuit with a customized frequency response for clear speech intelligibility. They can handle loads of less than 2 ohms and are protected against short circuits, making them ideal for use in places of worship, community halls, and museums.The A 4212 280VA model delivers 8A RMS, 11A peak and is suitable for areas of approximately 650m2. Note that coverage may vary from site to site depending on outside influences such as steel reinforcement, high current electrical wiring etc.).Inputs are provided for balanced mic and line, auxiliary and an input with VOX muting for interfacing into venue emergency evacuation system.Suitable for 19" rack mounting with use of A4376 rack mount ears. Features Designed to meet AS60118.4-2007 Coverage up to 650m2 XLR line & mic inputs Aux input via stereo RCA EWIS signal connection (RCA) Short circuit proof Compressor for added speech intelligibility Adjustable VOX sensitivity Compatible with single loop designs

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The Redback Phase 5 amplifier series was designed and developed over a span of 2 years in Australia, adhering to strict engineering standards. Extensive input and consultation from professional sound contractors and installers nationwide contributed to the remarkable performance and reliability of this series. With a multitude of features, these amplifiers are highly recommended for demanding industrial PA system applications. Furthermore, they feature on-demand multi-staged thermally cued fan forced cooling.The output power stage of the Redback Phase5 Boost Public Address 2x125W Amplifier A4372 is equipped with thermal monitoring, allowing for automatic operation of a long-lasting computer-style cooling fan that can be switched "off" or "on" based on airflow needs. In normal use or during paging mode, the fan remains inactive. However, over temperature sensing is in place to safeguard against extreme overheat situations, such as excessive load or improper use of the amplifier. The system will automatically restart once normal temperatures are reached, and there is also output peak limiting for added protection.The output voltage is capped at a maximum of 105V RMS regardless of the load impedance, to protect the speaker load from damage. Compared to standard 100V line PA amplifiers, which can supply over 180 volts in high drive and low load conditions, this amplifier's output voltage is significantly lower. This is important, as excessive voltage can rapidly destroy any connected loudspeakers. Features Robust design incorporating latest Mosfet technology Very Low noise and distortion 100V outputs 240V AC or 24V DC operation Multi stage thermally cued fan cooling Output Peak Limited Thermal Overload protected Signal Presence Indicators Fault Indicators Power Status Indicators Rack Mountable (suits 19 inch racks) Specifications Power Output: 2 x 125 Watts RMS Distortion: < 0.5%, @ 1kHz Output Line: 100V Frequency Response Mic Inputs: 50Hz - 12kHz, -3db Mic Sensitivity (3 pin XLR): 500mV Signal to noise ratio Mic Inputs: > 75db below rated output Line Output: 600Ω balanced, 0dB , 3 Pin XLR Output Connectors Speakers: Screw terminals Input Connectors Inputs: 3 pin XLR balanced 24V DC power: Screw terminals 240V AC power: IEC power connector Controls Mic inputs: Volume Power: On/off switch Indicators: Power, signal present, output peak limiting, overtemp ,current limit, Protect, Half Power, 24V DC, Mains Power Supply: 240V AC or 24V DC Fuse Protection: 7.5A AC , 2x 10A DC Dimensions: ≈483W x 410D x 88H

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This Redback 4 Zone 250 Watt 100V Public Address Mixer Amplifier is similar in functionality to the A 4377/A4387 amplifiers with the addition of four 100V line output zones. During normal use, you are able to select via the front panel switches, any zone on or off to control BGM programming. Remote paging to each zone is made possible by connecting the A 4660 paging console to the amplifier via Cat6 cable (2 consoles @ max 300m). This allows for paging to selected zones or all call, muting BGM to all zones. At the completion of the announcement, music will be restored to previously selected zones. BGM can also be selected on or off to all zones remotely from the paging console. When using the paging console, these microphones assume priority between input 1 and input 2 on the amplifier. If two consoles are connected, they operate on a first in, first served basis, activating a system busy indicator on the inoperative console. Features Multi-stage thermally cued fan cooling 2U 19” rack mount (with optional A 4376) Tape record out terminals Provision for connection to Redback A4660 touchscreen paging console MP3 based Alert/Evac tones with MP3 voice over message for emergency tones (built in) 3 mic input and 4 auxiliary inputs Phantom powering available on all inputs Adjustable vox muting on inputs 1 & 2. Bass and treble tone controls Terminals for 100V line output 240V AC or 24V DC power operation Thermal & fuse overload protection Built in short circuit protection Australian designed & assembled Specifications Power output: 250W Distortion: <0.5% @ 1kHz Output line: 100V Frequency response: 50Hz - 12kHz, -3dB Line inputs: 300mV Mic line sensitivity: 3mV balanced Mic input: >75dB below rated output Line inputs: >81dB below rated output Speaker connection: Pluggable terminals Power connection: IEC or 24VDC pluggable terminal Audio inputs: 3 pin XLR, stereo RCA, 3.5mm jack Controls: Volume (3), Bass, Treble, Master, Zone Selection (4) Bass adjustment: ±10dB @ 100hz Treble adjustment: ±10dB @ 10kHz Indicators: Power, 24VDC, Fault, Peak Limit, Over Load, Paging Active Fuse protection: 7.5A AC, 10A DC Power: 240V AC or 24V DC (nominal) Dimensions: 483 x 270 x 88mm

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Experience versatile and reliable sound amplification with Redback Compact 1RU Public Address Mixer Amplifier 30W A4235. Whether used as standalone or as a zone amplifier in larger systems, these compact 1RU rack mount amplifiers are the perfect solution. With the ability to operate on both 240V ac and 24V dc for battery backup, you can count on uninterrupted sound in any setting.The Redback Compact 1RU Public Address Mixer Amplifier 30W A4235 includes six source options on two inputs, offering versatility for your audio needs. Input one features a 3-pin XLR with the option for balanced mic level (3mV) or balanced line level (2V), adjustable with a trimpot located on the rear panel. Additionally, a dual RCA and 3.5mm jack can be found on input one, with adjustable sensitivity of 100mV or 1V. Input two includes three sets of dual RCA sockets on the rear panel and a 3.5mm jack on the front panel. Selection between auxiliary sources is made simple with the front panel switch. Input one also offers the option for VOX mute of input two, selectable through DIP switches. Phantom power is available for the XLR input of input one. Convenient volume level controls are located on the front panel for both inputs one and two.The Redback Compact 1RU Public Address Mixer Amplifier 30W A4235 includes advanced protection features for safeguarding against output over voltage, over current, and over temperature. These features are automatically reset once the fault is resolved, with clear visual indication provided through front panel LEDs to display the amplifier's status at all times. Features Compact 1RU 19” rack mount design Balanced mic or line input 100V line output VOX muting Phantom power Four auxiliary inputs Overload limiting Over voltage limiting On demand fan cooling Over temperature shut down protection Dual input connectors Variable input sensitivities 240V ac / 24V dc operation Specifications Distortion: < 0.5%, @ 1kHz Frequency response: 50Hz - 15kHz, -3dB Output line: 100V Mic sensitivity: XLR balanced 2mV to 2V Line sensitivity: RCA 100mV/1V, 3.5 TRS 600mV Signal to noise ratio: > 80 dB Input 1: 3 pin XLR balanced / dual RCA Input 2: Dual RCA x 3 / 3.5mm TRS jack x 1 24V dc power: Pluggable screw terminals 240V ac power: IEC power connector Speaker output: Pluggable screw terminals (100V line) Current Draw: 160mA Standby, 2.5A Full @ 24V dc Protection: 1A ac & 3A dc breaker Dimensions: ≈ 483W x 210D x 44H A 4235 Weight: ≈ 4.5kg

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This compact amplifier is specifically designed for use in information kiosks, ticketing booths, and help desks. It is ideal for situations where a small loop system is needed to assist those with hearing impairments. The device is engineered to meet the AS60118.4-2007 standard and includes a balanced mic input and a stereo line auxiliary input. The compact half-rack 1RU case allows for easy installation and operation on 12V DC power. Features Designed to meet AS60118.4-2007 Suits small booths 2-3 square metres XLR mic input Compatible with single loop designs Aux input via stereo RCA 10 year warranty Australian designed & assembled Short circuit proof Compressor circuitry Rack MountingTo properly install any of the half rack Redback products in a 19" wide racking system, the use of the H 4990 bracket is necessary. If only one product is being installed on the bracket, a metal (H 4992) or plastic (H 4993) infill panel can be added for a more polished appearance.

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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 4 Configurable InputsEach channel selectable for balanced mic or line level input. Individual Bass & Treble Controls per ChannelTamper-proof, screwdriver-adjust tone adjustment for installation security. Balanced 1V OutputVia 3-pin euro block screw terminals for professional connectivity. Selectable Phantom Power (15V DC)Supports condenser microphones when required. Adjustable VOX Priority MutingTwo priority levels for automatic background music muting during announcements: Input 1 (Priority 1): Mutes inputs 2–4 Input 2 (Priority 2): Mutes inputs 3–4 Selectable Mic or Auxiliary Mute FunctionEnables telephone paging, radio microphones, or emergency tones to override background audio. Dual RCA Line InputsInternally mixed to mono for simple integration. 24V DC OperationIncludes 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 Balanced 1V output via screw terminals 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 103D × 210W × 38H mm 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.

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These 1RU amplifiers are suitable for both standalone PA system use and as zone amplifiers in larger systems with local inputs. All models can operate on 240V AC or 24V DC for battery backup. They offer six source options on 2 inputs, including a 3-pin XLR with balanced mic or line level capabilities (adjusted via trimpot), and a dual RCA with adjustable sensitivity of 300mV or 1V. Additionally, input two features three sets of dual RCA sockets on the rear panel and a 3.5mm jack on the front panel, with source selection through a front panel switch. Input one can also be selected for VOX mute input two using DIP switches.Phantom power is available for input one XLR, while front panel level controls are provided for inputs one and two. The circuit is equipped with protective features for potential output issues, including over voltage, over current, and over temperature situations. Once the fault is resolved, these protections will reset automatically. Amplifier status can be easily monitored at all times through the front panel LEDs. Features Compact 1RU 19” rack mount design Balanced mic or line input 100V line output VOX muting Phantom power Four auxiliary inputs 3.5mm Jack Input (Front Mounted) Overload limiting Over voltage limiting On demand fan cooling (60W and 100W versions only) Over temperature shut down protection Dual input connectors Variable input sensitivities 240V AC / 24V DC operation Australian designed & manufactured Specifications Power Outputs Output: 60 watts RMS Distortion: < 0.5%, @ 1kHz Frequency Response Mic input: 50Hz - 12kHz, -3dB Line input: 50Hz - 15kHz, -3dB Sensitivity Mic input: 3mV-2V balanced Line input: 300mV-1V Aux inputs: 300mV - 1V 3.5mm input: 600mV Signal to noise ration Mic input: > 75dB below rated output Line input: > 81dB below rated output Output Connectors Speakers: Screw terminals (100V line) Input Connectors Inputs 1: 3 pin XLR balanced or 2 x RCA Input 2: 3 x RCA and 3.5mm Jack 24V DC power: Screw terminals 240V AC power: IEC power connector Size & Weight Dimensions: ≈ 483W x 210D x 44H Weight: ≈ 5.4kg

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These compact 1RU rack mount amplifiers are suitable for both stand alone PA system use, or as zone amplifiers in larger systems requiring local inputs. All models operate on 240V AC or 24V DC for battery backup operation.The input consists of a 3-pin XLR which can be set for either balanced mic level (3mV) or balanced line level (2V), adjusted via a rear-mounted trimpot. A dual RCA input is also provided with adjustable sensitivity of either 300mV or 1V. Phantom power is also provided on the input XLR. The circuit includes protection features in case of output over voltage, over current and over temperature. All are self re-setting once the fault condition is removed. Visual indication via front panel LEDs display amplifier status at all times. Features Compact 1RU 19” rack mount design Balanced mic or line input 100V line output Phantom power Overload limiting Over voltage limiting On demand fan cooling (60W and 100W versions only) Over temperature shut down protection Dual input connectors Variable input sensitivities 240V AC / 24V DC operation Australian designed & manufactured Specifications Power Outputs A 4240A: 60 watts RMS Distortion: < 0.5%, @ 1kHz Frequency Response Mic input: 50Hz - 12kHz, -3dB Line input: 50Hz - 15kHz, -3dB Sensitivity Mic input: 3mV-2V balanced Line input: 300mV-1V Signal to noise ratio Mic input: > 75dB below rated output Line input: > 81dB below rated output Output Connectors Speakers: Screw terminals (100V line) Input Connectors Inputs: 3 pin XLR balanced or 2 x RCA 24V DC power: Screw terminals 240V AC power: IEC power connector Current Draw Min: 170mA Max: 4.5A Size & Weight Dimensions: ≈ 483W x 210D x 44H Weight: ≈ 5.5kg

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These booster amplifiers are suitable for high-powered installations where each zone requires a specific wattage. They are perfect for shopping centers, pedestrian areas, public transportation hubs, and convention centers. All models can run on both 240V AC and 24V DC for battery backup. The input is through a 3-pin balanced XLR (1V), with a rear-mounted level control to prevent tampering or accidental adjustment.The Redback 250W Public Address (PA) Power Amplifier A4380A, made in Australia, boasts a circuit design with built-in protection features for output over voltage, over current, and over temperature conditions. These features are self-resetting once the fault condition is eliminated. Amplifier status is always displayed through front panel LEDs, providing visual indication. To ensure reliable operation at all times, the amplifier features on-demand fan cooling. Additionally, a dedicated nominal 24V dc 1A output is included on the rear to power additional devices. The unit is also equipped with rack ears for easy installation. Features Robust design incorporating latest Mosfet technology Very Low noise and distortion 70V, 100V and 4-16Ω outputs 240V AC or 24V DC operation 24V DC @ 1 Amp output for external devices Multi stage thermally cued fan cooling Output Peak Limited Thermal Overload protected Signal Presence Indicators Fault Indicators Power Status Indicators Rack Mountable (suits 19 inch racks) Specifications Power: 250 Watt RMS Distortion: < 0.5%, @ 1kHz Frequency response: 50Hz - 15kHz, -3dB Output line: 100V, 70V, or 4 - 16Ω Signal to noise ratio: (peak limiting by-passed) > 90 dB Line output: 600Ω balanced, 0dBV, 3 pin XLR Input Impedance: ~10KΩ Speaker Connection: Screw terminals 24V DC Output: Screw terminals Inputs: 3 pin XLR (1V) 24V-30V DC power: Screw terminals 240V AC power: IEC power connector Indicators: Mains, 24V DC, Power, Signal presence, Over temp, Over current, Shut down, Peak limiting Current draw: 250mA Standby, 17A Full @ 24V DC Protection: 7.5A AC and 20A DC fuse Power supply: 240V AC or 24V DC (nominal) Dimensions: 483W x 340D x 88 mm Weight: 14kg

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These modules are specifically engineered for emergency evacuation systems, operating on an external 24V DC power supply. With a line level audio input, they can generate a 100V line output through a highly efficient transformer. These modules come equipped with short circuit, overload, and thermal cutout protection, and boast a durable steel chassis. Features Powered by 24V DC 100V line audio output Line level audio input Short circuit, overload and thermal cutout protection Bolt-in chassis construction Specifications Output Power: 250W RMS Current Draw: 17A at full load (360mA quiescent) Frequency Response: 40Hz - 13kHz Distortion: <0.6% SNR: -91dB Sensitivity: 600mV RMS Operating temperature: -10°C to +60°C Dimensions: 300W x 240D x 95H

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Expertly designed for use in emergency evacuation systems, these Redback Public Address PA Amplifier Modules, made in Australia, are powered by an external 24V DC source. They have the capability to accept a line level audio input and produce a 100V line output through the use of a transformer. Additionally, the modules are equipped with short circuit, overload, and thermal cutout protection, ensuring safety and reliability. All of this is constructed on a durable steel chassis. Features Powered by 24V DC 100V line audio output Line level audio input Short circuit, overload and thermal cutout protection Bolt-in chassis construction Specifications Output Power: 250W RMS Current Draw: 17A at full load (360mA quiescent) Frequency Response: 40Hz - 13kHz Distortion: <0.6% SNR: -91dB Sensitivity: 600mV RMS Operating temperature: -10°C to +60°C Dimensions: 300W x 240D x 95H

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Choose a power rating based on the wattage needed for each zone in installations where high power zone amplifiers are required. These models are perfect for use in shopping centers, pedestrian areas, public transportation facilities, and convention centers. All models operate on 240V AC and 24V DC for battery backup and use 3 pin balanced XLR (1V) for input. Rear-mounted level control prevents tampering or accidental adjustment.The design of the circuit includes built-in safeguards in case of over voltage, over current, and over temperature conditions, which are automatically reset once the issue is resolved. Amplifier status is constantly displayed through front panel LEDs, while reliable operation is maintained through on-demand fan cooling. Additionally, a dedicated 24V DC 1A output is available on the rear for powering additional devices. Features Robust design incorporating latest Mosfet technology Very Low noise and distortion 70V, 100V and 4-16Ω outputs 240V AC or 24V DC operation 24V DC @ 1 Amp output for external devices Multi stage thermally cued fan cooling Output Peak Limited Thermal Overload protected Signal Presence Indicators Fault Indicators Power Status Indicators Rack Mountable (suits 19-inch racks) Specifications Power: 125 Watt RMS Distortion: < 0.5%, @ 1kHz Frequency response: 50Hz - 15kHz, -3dB Output line: 100V, 70V, or 4 - 16Ω Input sensitivity: 1V balanced Signal to noise ratio: (peak limiting by-passed) > 90 dB Line output: 600Ω balanced, 0dBV, 3 pin XLR Speaker Connection: Screw terminals 24V DC Output: Screw terminals Inputs: 3 pin XLR (500mV) 24V-30V DC power: Screw terminals 240V AC power: IEC power connector Indicators: Mains, 24V DC, Power, Signal presence, Over temp, Over current, Shut down, Peak limiting Current draw: 250mA Standby, 8A Full @ 24V DC Protection: 5A AC and 10A DC fuse Power supply: 240V AC or 24V DC (nominal) Dimensions: 483W x 340D x 88H mm Input Impedance: ~10KΩ

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These booster amplifiers are perfect for areas that need high power zone amplification. Simply choose the appropriate power rating for each zone's wattage needs. These models are well-suited for shopping centers, public transportation hubs, and convention centers. They all run on both 240V ac and 24V dc for backup battery operation and feature a 3-pin balanced XLR input (500mV). The level control is located on the back to prevent tampering or accidental adjustments.This power amplifier includes built-in protections for potential issues such as output overvoltage, overcurrent, and overtemperature. These features are self-resetting once the problem is resolved. The front panel also displays the status of the amplifier at all times via LED lights. To ensure dependable operation, a fan cooling system is activated as needed. Additionally, a dedicated 24V DC output with a capacity of 1A is located on the rear of the amplifier for powering auxiliary devices. Features Robust design incorporating the latest Mosfet technology Very Low noise and distortion 70V, 100V and 4-16Ω outputs 240V AC or 24V DC operation 24V DC @ 1 Amp output for external devices Multi stage thermally cued fan cooling Output Peak Limited Thermal Overload protected Signal Presence Indicators Fault Indicators Power Status Indicators Rack Mountable (suits 19 inch racks) Specifications Power: 125 Watt RMS Distortion: < 0.5%, @ 1kHz Frequency response: 50Hz - 15kHz, -3dB Output line: 100V, 70V, or 4 - 16Ω Input sensitivity: 500mV balanced Signal to noise ratio: (peak limiting by-passed) > 90 dB Line output: 600Ω balanced, 0dBV, 3 pin XLR Speaker Connection: Screw terminals 24V DC Output: Screw terminals Inputs: 3 pin XLR (500mV) 24V-30V DC power: Screw terminals 240V ac power: IEC power connector Indicators: Mains, 24V DC, Power, Signal presence, Over temp, Over current, Shut down, Peak limiting Current draw: 250mA Standby, 8A Full @ 24V DC Protection: 5A a.c. and 10A dc fuse Power supply: 240V ac or 24V dc (nominal) Dimensions: 483W x 340D x 88 mm Weight: 12.4kg Input Impedance: ~10KΩ

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Expertly crafted to satisfy the needs of modern audio setups, this highly adaptable PA/BGM control system is the perfect solution for various venues such as clubs, pubs, and gyms. It serves as an ideal centralized controller for all audio inputs and outputs in a multi-zone setup, with a design that is both highly flexible and easily configured by the installer without the need for special training or programs.Optional accessories/features for the A4480B:Control zone and emergency paging with the A 4660 paging console. Adjust volume and music sources remotely with the A 4495 wall plate. Easily switch presets with the A 4476 preset wall plate. Connect a local microphone or music input with the A 4931 or A 4495 wall plates.Package Contents A 4480B Audio Switcher M 8973 24V 5A Power Supply 240V AC power lead (suits Australian Standard) USB - PS2 compatible keyboard (D 2111) Acrylic anti tamper cover Features 8 Stereo RCA line inputs (internally mono mixed). 2 Microphone XLR inputs with phantom power option. Adjustable line input sensitivity 0.3/0.7V. Individual bass, treble and volume controls of all line inputs. 8 Balanced 3 pin XLR line outputs. Individual volume controls of all 8 outputs. Alert/evacuation/pre chime tone generator included (alert/evac tones comply to AS1670.4) . Emergency balanced input with selectable phantom power and input sensitivity. Programmable labelling of input sources and output zones via USB keyboard. Programme isolate function. Four programmable presets. Tampering lockout feature. Power fail trigger. 240V AC or 24V DC operation. 19” Rack Mount (2 unit). Preset OperationThe Redback A4480B Audio Matrix Switcher features six user presets for easily recalling regularly used configurations. Presets one to four are programmable by the user and can be accessed at any time. Preset five serves as a convenient "last setting" option before a new preset is loaded, allowing for a quick return to a previous system configuration. Preset six serves as a backup of the initial system configuration. Users can select presets from the front panel or remotely by using the A 4476 preset selection wallplate.Input and Output OperationThis system can support 8 zone paging consoles, 8 local zone inputs, 1 emergency paging input, 1 alert/evac input, and 8 auxiliary audio source inputs. Each auxiliary input has a selectable sensitivity range of 0.3 to 0.7V and can be routed to any individual zone or combination of zones. Additionally, each input is equipped with volume, treble, and bass controls, as well as a signal presence indicator. The programmable display clearly shows the selected input and its corresponding outputs.The A4475 wallplate allows for remote selection of auxiliary inputs in each zone (maximum one per zone) when connected via Cat 5 cable. This wallplate allows for selecting any auxiliary source and adjusting the local level.A 4478 local input wallplate can be added to each zone for connecting local mic or line audio sources. This wallplate is compatible with the A 4475 program selection wallplate.Specialized volume controls and signal indicators ensure tamper-proof operation for emergency paging and alert/evac signals. Closing contacts initiate the alert/evac signal.Each output is equipped with volume controls and features 3-pin balanced line level XLRs, totaling 8 outputs.Program IsolateThis feature enables the "blocking" of chosen RCA audio inputs to designated zones. This has no impact on paging or tones.Priority Muting OperationThe Redback A4480B is a high-quality audio matrix switcher made in Australia, designed to efficiently handle 8 inputs and 8 outputs. With its priority muting system, this device ensures that appropriate signals are routed to designated zones based on the condition of the system. For instance, in an emergency paging mode, all inputs, including alert and evacuation signals, are muted to allow for live announcements through the paging microphone. In alert/evac mode, all inputs are muted, allowing for tones and recorded messages to be played throughout all zones. This functionality makes the A4480B a reliable choice for any professional audio setup. In the zone paging mode, auxiliary signals will be muted when a local input is connected through the optional A4478 wallplate. This prevents interruptions during functions or events and can be prohibited via the front panel's PA on/off function.  

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