There are three output modes for DX3 Pro+: O-1 (Line), O-2 (Headphon), and O-3 (Line+Headphone). Volume settings can be set separately for O-1 and O-2. Line volume setting is effective for O-3.Does this unit save different volumes for Active Speakers vs Headphones W/AMP, or is it the same volume for both at all times?