Some projects have a noise floor going, others are quiet.

[Sternenlicht]

I think the title describes the problem, i wonder if someone found similar results with his tempest. I don't think its a hardware problem, because some projects don't have any noticeable noise floor, others have a -70db noise floor.
Maybe the compressor settings are different, that one setting i did not check - but the distortion is turned down, and every pad is muted. Still there is this noise floor.

[LucidSFX]

Compression is the answer friend. Turn it down when no sounds play.