Im going to get one of the sub $100 Fiio amps and i want to know if its worth it?
And can someone tell me what all the cheap amps are?
Well then yeah it is worth it. You'll definitely see an improvement. Going from hd600 straight out of my computer, to a fiio e7 I could tell a pretty decent improvement. I've since upgraded and my senns sound waaaaay better.
I've listened to the e9 and its really good for a budget amp and its got loads of power. There's also the o2 which seems to get good reviews by jds labs for ~150. Oh and also its "semi-portable", if thats something that you were looking into
What' your source? If it's MP3's I wouldn't bother.