I can feel the difference in the lowest octaves. Above that, I don't recognize any and don't really see any on an oscilloscope.
Just to be sure, I'll mention that I first try to find the differences using ears only. Only after that do I look for differences using oscilloscopes and spectrum analizers. And I don't lie to myself, or the others, about whether I was able to hear something and/or whether what I saw in the analizer windows was different from what I've heard.
Also, I'm not saying that differences are great in this case (they are not, to say the very least). Just pointing out there are differences, because others have mentioned there aren't any.
