This is no longer the latest version, please check Firmware Updates to ensure you install the most recent update on your amplifier.


D-series firmware update: D_Series_v1.088 
Release date: March 2018

Please find available for download our latest firmware update for our D-Series amplifiers. Simply use the link below to download Zip file, and follow install process.


Description of change: Recommended update, fixes a rare situation which could cause a system failure.

Priority: High, please apply to all models where possible, at the first opportunity.

Instructions for use:

  1. Follow file link to zip, called


    Load “D Series.hex” in the root of a USB drive

  2. With the D-series unit off, insert drive into the USB in socket on rear
  3. Turn unit on
  4. Follow on screen instructions – takes a minute or so

You should also be able to find install instructions outlined in your user handbook. Any queries, contact us on