When RME ADI ED990A-2 its Extreme Power headphone stage the basic noise floor was taken care to be as low as possible. Which was then confirmed in many reviews most black background…. Even when used with IEMs. Drivers FREE for ADI Monitors Still RME wanted to make sure that even the most sensitive IEM combined with the most sensitive listener receive the full dynamic range on playback. Also capable outputs like the Extreme Power ones are not fully safe against[…]