The GR8A is an 8 channel amplifier, born out of the many requests we received for an amplifier to complement our GR and DR installation mixers.





  • Inputs – Inputs 8 balanced XLR @ +4dBu for rated power output. Tamperproof mode switches allow five configurations of common input sourcing. Level control on knob or preset with blanking plug
  • Outputs – 8 x 60W into 4 ohms on 2-way phoenix type pluggable screw terminal. 3 colour led output indicator on each channel. Tamperproof mode switches allow bridged pairs of outputs [up to four]. Bridged operation indicators on front panel
  • Monitor – 8 position switch to select one of the amplifier outputs as the monitor source in headphones or monitor line out [TRS]. Stereo phones socket wired for mono with sensitivity switch for headphones matching
  • Remote Standby – 9-pin D-type female connector provides individual channel mute remote circuit. Uses simple external switches
  • Cooling – Temperature – controlled cooling system uses 3-speed fan. 3 colour status indicator on front panel
  • Transformer Option – GR8X. Provides up to 8 high quality 70V or 100V line transformers mounted in 2U chassis
  • PSU – Internal mains voltage PSU. +/- 24V DC backup input is provided



Allen & Heath + macOS Mojave

In anticipation of the launch of Appleā€™s latest update to macOS, Mojave, please note the following:

The correct operation of the full, public release of this platform is not yet verified by our development and test departments.
As a result, support for macOS Mojave is not currently offered for this product.

Full software testing and verification will commence following the official launch by Apple. As our test programmes are completed we will update this notice.