I find that I am listening to rock and pop more often than classical and opera music. My Audio Technica ATH-W5000 "Raffinato" headphones excel with classical, jazz, and opera music, but they leave me wanting for a bass heavier pair of headphones when I listen to rock and pop music.
I can not afford the current generation of the top of the line headphones so I have to settle for the former top of the range selections.
I was thinking about getting myself the Monster Beats Audio Pro headphones, but that is a very distant consideration at the moment.
The Sennheiser HD-650 with the Moon Audio Blue Dragon cable will sound near perfect. They are well balanced with pitch accurate tonality. The improved bass response of the HD-650s give it a deeper, punchier, and tighter bass without any distortion. The mid range is highly accurate and natural sounding with smooth transients and they do not produce listener fatigue. The treble extends up to airy and silky smooth top octaves. The sound stage is quite deep and wide with precise imaging and finely textured layers of resolution. All in all, these are almost technically perfect sounding headphones.
The downside is that they are a bit boring and they sound a bit slow especially with rock and pop music or dance music.
The Grado RS-1i headphones are very colored cans. They have deep, tight, punchy bass with plenty of slam without losing pitch or texture. The golden honey mid range is so intimate, warm, full-bodied and rich with oodles of layers of textures and resolution and detail. The treble is a bit shrill with peaky highs and it can sound quite fatiguing especially for opera music. These cans are extremely nimble and fast with the ability to sort through complex layers of music and turning on a dime in terms of transient speed and dynamics.
The problems also include a smaller but more focused sound stage and the shrill treble region with certain types of music. They are also quite fragile as they are made of Mahogany wood so delicate care must be paid when handling them. My old pair of Grado RS-1 headphones developed a crack in the right ear cup because I was not careful and it is expensive to send it back to Grado Labs for repairs which take quite a bit of time for turnaround.
I am itching for a different sound, but which to choose?
Technically, the Sennheiser HD-650 headphones are more accurate and they are more tonally balanced which should provide for longer hours of listening enjoyment especially with a good quality aftermarket headphone replacement cable like the Moon Audio Blue Dragon. Yet, music is about conveying the passion of the music to the listener and the Grado RS-1i win in this critically important area because they express the soul of the music quite passionately.
The Audio Technica ATH-W5000 "Raffinato" headphones are a unique pair of cans. They are hyper detailed and they possess unbelievable resolution. They are also wicked fast with super speed transients and they have an ability to turn the corner on a dime. They also have a wide sound stage for a closed pair of headphones. Female vocals sound a bit distorted as if they are more intimate and focused than male vocals. This gives them a unique presentation especially for female opera music and female singers. The problems are quite important too. They are made of a rare type of wood which makes handling them quite the challenge because they are so light and delicate. I do not have any problems with the fit of the headphones on my head, but it takes a while to get the right seal after adjusting the headband and ear cups. They are fussy headphones. I find it more difficult to listen to music for a longer period of time with the Raffinatos because they have such a unique and idiosyncratic way of presenting the music that can turn off a lot of listeners. They also produce a fair amount of echo and reverberations that makes the music sound like it is bouncing off the walls inside an echo chamber especially with choral, gospel, and hall music. The bass is quite detailed and textured, but it lacks any authoritative punch or impact. It feels like these headphones lack a solid foundation especially with pop and rock music. These are probably the most colored and unique sounding headphones that I have ever listened to for a long period of time. At first, it is quite bemusing, but it gets to be irritating after years of ownership because I have listened to live concerts or the same recorded music on different headphones and the presentation and tonality are completely different.
There is no such thing as the perfect headphone for all genres of music.
This is why so many Head-Fi members and audiophiles collect different headphones for different types of music.
I think that I convinced myself to make a decision: Sennheiser HD-650 with the Moon Audio Blue Dragon cable. I would rather have a near technically perfect pair of headphones that sound boring than another pair of colored headphones.