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Allen & Heath GR2 9-Input / 4-Output Zone Mixer

Model: A&H GR2

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About: Allen & Heath GR2 9-Input / 4-Output Zone Mixer

The GR2 is a 9-input, 4-output analogue zone mixer for sound installations requiring 6 mic/3 stereo line or 4 mic/4 stereo line to 1 stereo/1 mono zone and aux output. All settings are custom configurable from the front panel and are protected by a cover plate for day-to-day operation. Zone source selection, volume and more may be remotely controlled.

6 Mic/Line Inputs with EQ

Balanced inputs are provided on terminal blocks for convenient pre-wiring, with Mic 1 duplicated on XLR for quick plug-and-play. Each input has selectable +15V phantom power, protected mic/line pads and gain trimmers. There is a mic priority function for chairman or MC override, and a mic mute. The mic also has dedicated EQ with swept HPF, swept MF and shelving HF. An expander input allows more mics to be added to the mix.

3 (or 4) Stereo Music Inputs

Music channels are provided on RCA inputs with protected -10/+4 level settings. Mic/line 5/6 can be configured as a stereo input providing a 4 mic, 4 stereo line system. Inputs may be configured one at a time, or all together.

Paging & Music Priority Override

GR2 offers a dedicated paging channel with tailored EQ for speech intelligibility. The source can be configured from Mic 1 and/or an external input or alarm message and the zone program is ducked when a page signal is detected. Music 1 may be configured as a priority input for jukebox and pre-recorded message override.

Mono & Stereo Zone Outputs

Outputs are available on both RCA and terminal blocks for pre-wiring or plug-and-play operation. Stereo Zone 1 may be configured for music only or music + mics, and mono Zone 2 can be configured for mics, music or music + mics. VCAs are provided for ducking, alarm override and remote level control. Zone 1 features a 2-band EQ and a mono switch.

Mono Aux Output

A versatile output for additional zone, mic expander, paging distribution, sub bass and more is provided on RCA and terminal block connectors. It is configurable as page out, mic mix, follow Zone 1 or Zone 2, and has a switchable 100Hz LPF for sub-bass feed.

Configuration Protection

All settings are configured from the front panel. Preset dip switches are letter coded, and trimmers recessed for screwdriver access. A cover plate protects the settings and provides space for fitting a custom label. Any of the rotary knobs may be removed and hole plugs fitted as required.

Remote Control

The GR2 uses standard RJ45 CAT5 cable for installation. ‘Zone remote’ allows remote level and source selection for both zones over a single cable. A 10V DC control input is provided for custom wired switches or potentiometer, third party interface or the ALLEN&HEATH PL-12 wall plate. The PL-5 hand-held IR controller is available for use with the PL-12. ‘Utility remote’ allows remote mic priority and mute switching, page selection and alarm override.

PL-12 is an ‘intelligent’ remote controller. It provides the non-technical operator with local control of the music source selection and/or audio level. Up to two controllers may be connected: just one, one for each zone, or a single unit to simultaneously control both zones. A menu of setup options allows the installer to configure its function to match the specific requirements of each application. Additional switches may be wired for room combining situations and to disable the controller when the settings should not be changed.

The optional PL-5 hand held infra-red remote controller adds wireless control, and additional features including the store and recall of up to 4 source/level presets. PL-5 has 14 user programmable buttons. These would typically be programmed by the installer as a combination of volume up/down, signal mute, source, preset select or MIDI messages for convenient control by the day-to-day operator.

The PL-12 can be mounted into a single unit wall box using the standard face plate provided, or furniture mounted using a cutting template. It interfaces with the GR2 using standard CAT5 cables. The second controller daisy chains with the first for convenient single run cabling. Space is provided on the panel for custom labeling.


  • 6 mic/line inputs with EQ
  • 3 (or 4) stereo music inputs
  • Paging and music priority override
  • Mono and stereo zone outputs
  • Mono aux output
  • Remote control
  • Configuration protection

UPC: 6938122228252 is a Canadian authorized Allen & Heath retailer.

Reviews: Allen & Heath GR2 9-Input / 4-Output Zone Mixer

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Warranty: Allen & Heath GR2 9-Input / 4-Output Zone Mixer Warranty:

30 Days

Manufacturer's Warranty:

Limited One Year Warranty on most products. See user manual for details.