Impressions on Aeon 2 Closed vs Aeon 1 Closed and Sony MDR-Z1R Vs Z1R: The Z1R was much more sensitive, than either A1C and A2C. I would often have to turn it down when I swapped to the Z1R. Isolation was lower on Z1R, @TSAVJason was cranking one of our theater rooms while I was listening and I could hear it while listening to the Z1R but didn't on the A2C or A1C. And comfort wise, Z1R sat the loosest on my my head where the A2C I would notice more clamp but it wasn't uncomfy. Sound wise, the Z1R had more bass quantity, the A2C was noticeably more fuller in the mids, treble the Z1R was more forward at times a little too much for me on tracks I would say were mastered a little hot. Vs Aeon 1 Closed: Sensitivity was nearly the same on the Hugo TT 2, not as notable difference as say the Z1R. Our Aeon 1 Closed has been around since it launched so the pads and their soft were little softer and noticed little bit more sound leaking in on the Aeon 1. Lighter clamp on the Aeon 1 likely just to their age and loosening up over the years. Sound wise, the A2C and A1C are much more similar than they are different. I would notice how the A2C would hit deeper at times and have more impact on bass heavy hip-hop. Timbre was improved on the A2C over the A1C. Soundstage wise the A2C would feel more natural over the A1C. Tried both the A1C and A2C without the filters.