Audient EVO Linux tools

Python scripts for changing settings on Audent EVO 4/8 USB audio interfaces. Might also work with other Audient devices, possibly with some simple modification (change product id?).

How I made this

First I reverse engineered the USB interface by running the official EVO Control app on Windows, and listening to messages occuring over USB using Wireshark, and carefully examining outgoing data using a filter. Once I figured out the required USB messages that set the volume etc on the device, I used a simple python script (using pyusb library) to play back those USB messages to the device in Linux. Used lsusb to figure out vendor and product ids.

Installation & Usage

1. Ensure you have Python 3+ installed and then install requirements

   pip install -r requirements.txt

2. Optional: Add a udev rule so you dont need to run the python script with sudo

   echo 'SUBSYSTEM=="usb", ATTR{idVendor}=="2708", ATTR{idProduct}=="000[67]", MODE="0666"' | sudo tee /etc/udev/rules.d/70-audient.evo.rules

3. Optional: Edit settings in the python script to your liking.

4. Run script, it will modify the settings on your Audient EVO 4 device (may require sudo if you skipped step 2)

   python evo4-settings.py

TODO

Suggestions/PRs welcome.

• Allow adjust settings without having to detach from kernel and re-attach
• Run in the background and save/restore any changes made using physical controls
• GUI for adjusting settings (e.g. Official Evo Control Windows/Mac app)