EDIT: I'm beginning to think moving armatures in general share a common signature, with the only noteworthy differences accounted for by the housing, more or less. Granted, there are always a few exceptions. In fact, the GR10 and e-Q5 sound so similar, during my listening, I wore the Orto's in one ear, and the Grado's in the other ear. Even then, the differences were so subtle, it ALMOST sounded as though I was listening to one and the same earphone. However, there are of course (very) subtle differences between the two. Detail and overall transparency is nearly identical, and is nothing short of exceptional, but the GR10 sounds a hair or two more open and airier in presentation. However, I should mention that even then, the subtle changes are only appreciable when one carefully and attentively listens FOR them, rather than the subtleties presenting themselves. I'd also say the GR10 is a tad smoother sounding overall (again, by just a hair or two), while details stick out every so slightly more upfront with the e-Q5. It's of course outside of sound where the two differ most. For one, I prefer the GR10's cable, as well as overall fit and comfort, as it doesn't tend to stick out when worn, unlike the e-Q5. Even during night time listening, with the GR10's, I can comfortably rest my head on it's side, while unable to do so with the Orto's for obvious reasons. The GR10's brought a smile onto my face the instant I wore them, as did the e-Q5 upon first listen. Given their sonic similarities, I can see just why.
Edited by i2ehan - 12/6/11 at 8:35pm