I suppose it's unfair to give these headphones a completely bad wrap considering how low of a price that they retail for, and you can get them for even cheaper than that most of the time. The main issue I find with the Sennheiser HD201 is the complete lack of a proper fit or seal no matter how I try to position them on my head, this causes obvious issues with comfort coupled with the fact that the ultra-thin compressed pads barely keep the hard plastic drivers off of your ears.
 
Sound quality is reasonable for the cost, however better can be found - I've taken a liking to the Monoprice lineup in this price range. The HD201 actually seem to respond quite well with amplification and equalization, surprisingly well; the issue here is you'd have spent three times the price of your headphones into the source piece(s) required for you to capitalize on that.