Allen & Heath GR3

SKU : GR3/O220X

SGD 843.00
Availability: Out of stock

Analogue 1U Rack Mount Zone Mixer. 2 Mic Inputs, 2 Stereo Inputs, 2 zone outputs



GR3 is a 1U rack-mounting or desktop audio mixer, providing simple yet comprehensive control of background music and paging in bars, restaurants, stores and other leisure / retail environments. Standout features include optional remote wallplates and a mic input on the front panel.





Two mic inputs on rear mount Phoenix connectors with MIC1 selectable to an optional front mounted XLR.



Two stereo inputs on rear mount phono connectors.



Two stereo (mono selectable via internal jumper) zones on rear mount Phoenix connectors.



Paging and Alarm contact inputs on rear mounted Phoenix connectors allow integration with 3rd party paging stations and fire alarm systems.



Remote control can be achieved via PL-14 Remote connected to the rear mounted RJ45 or custom/3rd party analogue remotes connected to the rear mounted Phoenix connectors.



• Rotary Volume control with four source select switches.

• Optional IR remote control.

• Connection via standard Cat5e cabling.

• RJ45 Link through connector for adding additional controllers (Maximum of two).

• Three versions to suit UK, EU or US standard front panels.




Individual mix and selectable control of all inputs to Z1 & Z2.



Gain and 2 band EQ available on all mic inputs with an additional 2 band EQ available on Z1 & Z2 outputs.



When audio sensed on MIC1 channel and/or PAGE contact closure is sensed then music is faded to pre-set level and MICSs2-4 muted for the duration of the announcement. MIC1 zone select LEDs flash slowly when in priority mic mode.



Primary and secondary mic modes

Perfect for controlling hierarchal microphone feeds such as simple paging announcements.


Emergency mic mode

For use with 3rd party systems in emergency situations. Mutes all inputs except MIC1 on alarm contact closure.


Juke box mode

Provides a priority line input to the system for pre-recorded announcements or programme material such as Sports channels.



Entering programming mode allows the following parameters to be adjusted:

Ducker attenuation

Ducker hold time

Ducker release time

Music crossfade time

Jukebox hold time

Jukebox release time


Microphone Inputs Mic Input Sensitivity (Gain = Min): 0 dBu
Mic Input Sensitivity (Gain = Max): -50 dBu
Mic Level control (Max): +5 dB
Mic Level control (Min): -80 dB
Mic HPF -3 dB: 150 Hz
Mic EQ LF: ±15 dB fc = 80 Hz
Mic EQ HF: ±15 dB fc = 8 kHz
Mic Frequency Response 20 Hz – 20 kHz: ±1 dB
Mic THD+n @ 0 dBu in 1 kHz: 0.004% 22 Hz - 22 kHz
Mic THD+n @ -30 dBu in 30 dB gain 1 kHz: 0.005% 22 Hz - 22 kHz
Mic Hi Level warning LED (Unity gain): +18 dBu
Clip level (Unity gain): +21 dBu
Stereo Inputs ST Input Sensitivity (Gain link OFF): 0 dBu
ST Input Sensitivity (Gain Link ON): -10 dBu
ST Level control (Max): +6 dB
ST Level control (Min): -76 dB
ST Frequency response 20 Hz – 20 kHz: ±0.5 dB
ST THD+n @ -10 dBu in 1 kHz: 0.015% 22 Hz - 22 kHz
ST THD+n @ 0 dBu in 1 kHz: 0.035% 22 Hz - 22 kHz
Crosstalk from Unselected Channel: -75 dB @ 1 kHz
Zone Output Main Zone Level Control (Max): 0 dB
Main Zone Level Control (Min): -74 dB
Main Zone Hi Lev LED (Unity Gain): +18 dBu
Main Zone EQ LF: ±15 dB fc = 80 Hz
Main Zone EQ HF: ±15 dB fc = 8 kHz
Main Zone Clip Level (Unity gain): +21 dBu
Noise ST Input to Main Zone Output (Unity): -90 dBu 22 Hz - 22 kHz
Mic Input Routed at Min Gain as Well: -88 dBu 22 Hz - 22 kHz
Mic Input Routed at Max Gain: -77 dBu 22 Hz - 22 kHz (150R source)
Power 100 - 240 VAC, 50/60 Hz, 20 W
Power Consumption: 15 W (with no remote attached)
Dimensions (H x L x W) 1.9 x 9.5 x 17.2" / 48.0 x 242.0 x 438.0 mm
Weight 3.4 kgs.


Click here for full specs sheet