Ok, so as I mentioned in the other thread, I installed the speedball. The quiet between passages in a song is amazing! Even quiet in between instruments, if that makes sense. Black background indeed! For reference I really noticed it on "An Ode To No One" by The Smashing Pumpkins. It also helps it's FLAC encoded.
Very good detail too, excellent bass that is tight and has impact, this upgrade is worth it! Very awesome!