It was in PM conversation with Rob Watts.
I actually noticed a difference before I PM’ed him about it. There may very well be something else at work accounting for the difference, but for me it’s definitely noticable.
And I used to own 4 different pairs of Mojos, it was the same on all 4 different pairs.
Keep in mind, I’m quite young (25 years old) so my ears are most likely more sensitive than most. yes, quite possibly a contributory factor
It’s most noticeable on music with fast transient snare drums, especially synthetic snares, the right port sounds more rounded off and laid back. Bass also hits a bit softer (the whole sound does). I’m not sure the difference will be noticeable on slower music or with instruments that are already laid back. Probably the type of headphones used also plays a part in how much of a sound signature difference can be detected by users. A few months ago, when I tried to help another head-fier to understand why his music experience was so different to other Chord users, I compared Beyer DT 770 pro, Aeon Flow Closed, and Drop Koss 95X electrostatic headphones for him. To my surprise, after using the Aeon Flow Closed, and Drop Koss 95X for many months, the Beyer DT 770 pro (renowned by music producers) sounded slightly veiled when listening to steel string guitar, but the Aeon Flow Closed, and Drop Koss 95X sounded un-veiled as though one was standing in front of the artist. So the headphones that one has been using recently, can influence how well one can detect subtle changes in sound signature.