int: The speaker's treble EQ.

        An integer between -10 and 10.

def treble(self):
        """int: The speaker's treble EQ.

        An integer between -10 and 10.
        """

        response = self.renderingControl.GetTreble([
            ('InstanceID', 0),
            ('Channel', 'Master'),
        ])
        treble = response['CurrentTreble']
        return int(treble)