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?).

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.

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

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)