Well Ive spent about 8hrs with the E10 so far. I cant really describe the differences between it and the headphone out of my laptop, except to say its certainly better. And most certainly different. The hiss is nearly gone, the E10 cuts out when it hears digital silence. Where when I would hit pause in the past and hear horrible hiss its now silence instead. During quiet passages I can here very faint hiss, very faint, but to me its an acceptable amount for the money invested and the improvement heard.
I have 3 sets of phones, ATH-M35, the k240s, and newly acquired Alessandro MS1s. The MS1s have gotten most of the 8hrs, mostly cause they are new, but I have tried them all a few times.
The k240s are very pleasant out of the E10, I could listen to them all day and not be tired of them, minus my sensitive ears getting hot and pinned against my glasses. I really liked them when I adjusted the EQ similar to what was posted on the last page. I didn't think to play any classical until I started this post so I'm doing that now, using both a flat EQ and adjusted. Certainly find tweaking the EQ to be more to my liking. The only classical I have digitally is from the Ultimate Download disc that is free from HDtracks when you download media monkey, and one Beethoven disc, the basic Beethoven by Simon Addison and the English Philharmonic, it all sounds quite good.
So far, this is $45 well spent.