phthora
Headphoneus Supremus
I can. Aeons have considerably more depth and soundstage vs the sine. Bass quantity is increased with the Aeon. There's more mid presence to my ears in the Aeon, but in a less than pleasing range for certain songs (400-600 range). Sines are a bit warmer in the low mids, more extended up top but almost to a fault. Two very different experiences, but very different form factors as well. I like the Aeons better for certain songs and Sines better for others. Aeons kill with a good modernly recorded rock track. Both are exciting to listen to in different ways but the sines will sound wimpy in comparison. Depends on what you plan on doing with them...sines are a fantastic portable, Aeons I wouldn't wear in public personally.
Thanks for the info! I just bought the SINEs on an excellent deal, making them my third closed planar now. I figured they'd be outperformed by the AEONs, but I'm glad to hear that they aren't aiming for the same FR at least. Not-as-good-but-different is something I can still appreciate.