How did it effect the sound?
Its tough to say. I did notice differences, but without being able to A/B compare I can't say for sure that the differences were caused by a psychological effect. Anyway, with that out of the way:
The highs seemed moderately more detailed and clear. Not really louder, but less grainy. As well, the mids seem more lifelike. Bass seems more or less the same.
-JMJ