The Wireless GO II's fine gain control can be enabled/disabled via RØDE Central. To activate it, open RØDE Central, plug in the receiver, navigate to the settings page, and toggle the 'Gain Mode' button to 'Fine'. This will expand the Wireless GO II's three-stage pad to a 10-stage pad, which goes from 0dB to -30dB in 3dB increments. It also gives you access to an extra 6dB of gain reduction, which is useful if you have a particularly sensitive camera or recording device. Read more about the gain control at the Wireless GO II User Guide.