The detail exists in the 007 but It's diffuse and difficult to pick out. Assuming both are driven well, 009(S) isn't more resolving than 007 by a huge margin(maybe 10% more if I have to give a number) but It's easier to pick out details with 009. 009 has this "too separated too fast" kind of presentation, 007 sounds cohesive. 007's mids are thick and quite textured, the usual 1300hz shout of Stax headphones is more annoying on 007 than 009 because of that. The decay on 009 is most of the time too fast, such fast decay gives the listener the sensation of "wow this headphone is incredibly detailed" however that kind of decay is one of the big reasons of why 009 doesn't sound natural. 009S(not 009) has good sub bass, it can rumble well, however in the bass department 007 totally wipes the floors with 009 and 009S. Better detail, better impact, better sub bass rumble... you name it. 009S sounds -especially with Carbon- extremely transparent, with good recorded music It doesn't feel like you are listening to headphones, it feels rather like sounds are appearing and floating magically around you. Sound images can get 3D on both headphones if the source is calling for it and if your dac is good enough for that. 009 makes the transducer disappear in its presentation if the music is well recorded. 007 does present like, sound like a headphone. Both have ridiculously good imaging. It's hard to imagine sound reproduction gets more resolving than on the 009S and Carbon(throw a Denafrips Terminator into the mix too) however you have to really like headphones with incredibly fast decay and have a certain type of taste which helps you to ignore harsh treble. 009 requires EQ more than 007 if you are into such stuff.
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