Redback 500W Mixer Amplifier (A4395A)


A 4395A

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The Redback A 4395A is a powerful 500 Watt mixer amplifier designed for installations that require a high-power zone amplifier. It is ideal for shopping centers, pedestrian precincts, public transport facilities, and convention centers.

This amplifier features two audio inputs: input 1 offers a balanced XLR Mic input or dual RCA line input, while input 2 provides a dual RCA input. Additionally, there is a music input on the front panel for connecting portable devices. When connected, this front input overrides the rear input 2 audio source and can be adjusted using the volume 2 level control.

The VOX circuit, with a front panel sensitivity adjustment, allows input 1 to mute input 2. Phantom power (15 volts) is available at the 3-pin Mic XLR on input 1, and both RCA inputs 1 and 2 have adjustable input sensitivities. The amplifier also includes comprehensive protection circuitry, including overcurrent, overvoltage, and short circuit protection, ensuring reliable operation in any setting.




  • 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
  • 300mA battery trickle charge
  • Adjustable input level sensitivities
  • Bass and Treble controls
  • Phantom power on microphone input (XLR Input 1)
  • 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)


Power outputs

A 4395A:  500 watts RMS

Distortion:  < 0.5%, @ 1kHz

Output line:  70V, 100V or 4 - 16Ω


Frequency response

Mic input:  50Hz - 12kHz, -3dB

Line inputs:  50Hz - 15kHz, -3dB



Mic input: 2mV

Line inputs: 100mV or 1V


Signal to noise ratio

Mic inputs:  > 75dB below rated output

Line inputs:  > 81dB below rated output


Output connectors

Speakers:  Screw terminals


Input connectors

Inputs:  3 pin XLR balanced or 2 x RCA

24V DC power:  Screw terminals

240V AC power: IEC power connector



Mic inputs:  Volume

Line inputs:  Volume

Bass:  ±10dB @ 100Hz

Treble:  ±10dB @ 10kHz

Power:  On/off switch

Indicators:  Power, signal present, output peak limiting, overtemp, current limit, shutdown, VOX active, 24V DC, Mains

Power Supply:  240V AC or 24V DC


Fuse protection

A 4395A:  10A AC , 20A DC



483W x 410D x 88H

*Specifications are subject to change without notice.

Redback 500W Mixer Amplifier (A4395A)

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Australian owned since 1980


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