I should probabally preface this review by stating that I am by no means an audiophile, however I appreciate good, accurate sound replication. I had only had experience with low end Samsung, LG and sony iem earbuds before purchasing these but I was eager to improve my music listening experience with a good pair of over or on ear headphones. After considering such models as the sony zx310, philips shl3000 and others by TDK, panasonic and a range of other reputed manufacturers i decided on the sennheiser hd201s.
I appreciate strong mids and highs, and am not a fan of powerful, muddy bass. My preferred styles of music are Soft rock, Symphonic rock, synthpop, new wave, traditional pop (sinatra/ four seasons), rock and roll and romantic classical music. I found these quite ideal for the aforementioned styles of music although the soundstage felt a little narrow. Overall replication is good, with clear vocals and instruments not drowning out each other or sounding muddied by booming bass. However, even someone who is not a fan of hip hop or anything like that (such as myself) may find themselves wishing for a more powerful low end.
The build quality of these headphones is generally good, with pivoting joints at the top of the earpieces being the weakest-feeling part of the unit. They are extremely comfortable, although some with larger ears may find the oval-shaped earcups problematic. They covered my small ears without any problem, and I was able to listen to the whole of Time by ELO without ever wanting to take the 201s off, although that may have been caused equally by the quality of the songs! One thing, however, that some may find frustrating is the loose fit which causes in part the relatively poor isolation and high noise leakage by the standards of an over ear model.
The 201s came in a basic package which only included the headphones themselves along with a quarter inch adapter for older and professional equipment (this model is designed for indoor use, so it makes sense to include this just as the 3 metre cable makes sense). I found this particularly helpful as it allowed me to start listening to my old records immediately! The adapter is gold plated, and probably only worth a few pounds or dollars online, but it was helpful to find this included.
In summary, anyone on a budget looking for a good set of studio monitors to use at home would be well served by these as long as they are not a fan of boomy bass or powerful treble.