To increase the volume on the PC:
- Go to Settings > Devices > Audio Devices
- Increase the "Volume Control (Headphones)" to your desired level.
- Increase the "Adjust Microphone Level" to your desired level.
To increase the volume on PS4:
- Go the Quick Menu > Adjust Sound and Devices.
- Select Volume Control (Speaker for Controller).
- Adjust the volume to your desired level.
To increase the volume on Xbox One:
- Go to Settings > All Settings > Display & Sound.
- Select Volume.
- Adjust the volume settings as desired.