@Cellist88: The ADI DAC wasn't specifically designed for the Andromeda, but they absolutely had IEMs like the Andromeda in mind. The Andromeda still is something like the hissing-benchmark, but there are other IEMs that are not far off. If your device is silent with Andromeda, it will be silent with probably everything else. So that's the goal. It may be that people prefer the Andromeda from about 2 ohm or whatever, but what you generally want is a near 0 ohm output. Raising the OI is easy, as @Riotvan already mentioned. Lowering the OI is much more complicated. So it makes more sense to go for 0 ohm OI, as some IEMs might need this, and leave it up to the user to raise the OI afterwards, if they feel so.