bool: The Sonos speaker's loudness compensation.

        True if on, False otherwise.

        Loudness is a complicated topic. You can find a nice summary about this
        feature here: http://forums.sonos.com/showthread.php?p=4698#post4698

def loudness(self):
        """bool: The Sonos speaker's loudness compensation.

        True if on, False otherwise.

        Loudness is a complicated topic. You can find a nice summary about this
        feature here: http://forums.sonos.com/showthread.php?p=4698#post4698
        """
        response = self.renderingControl.GetLoudness([
            ('InstanceID', 0),
            ('Channel', 'Master'),
        ])
        loudness = response["CurrentLoudness"]
        return True if int(loudness) else False