I just got some Sony MDR Z1R hedphones. They sound like a great 300b tube amp on good speakers. The sound is unique in the way it dissolves and emerges from the headphone sound space. The lowest bass octaves are clear and well represented, but not overwhelming. The bass does not bleed and obscure the midrange and I think the tuning works very well for all kinds of music. Imaging is quite large for a closed headphone. Tonality is rich, and I find them hypnotic to listen through. Detail sneaks up on you, but is excellent.
There is a lot of reflex Sony bashing on the internet for some reason. However, there are some who have sold their Sony R10 headphones (expensive bio cellulose classic headphone unobtanium) when they got their Z1R so it is possibly a modern classic, in spite of mixed reviews.
Some people seem to like an icy, resolving, bass light headphone for classical. I don't know why, since classical music I have heard has quit a bit of bass and lower midrange.
In lieu of the Z1R is the Sony MDR Z7. The Z7 is not as refined, but is still excellent, and is currently the best bargain in high end headphones. I also have Z7 that I use in Pleasanton. Both headphones are very well made and very comfortable.
The Z7 can be found for as low as $325 or so, and the Z1R's trending low prices tend to be in the 1500 to 1800 range or so US dollars.