I've been away from the forum for most of this year, as I bought some IEMs in September and then went back to school. With one set of closed headphones, one open, the IEMs, and my Leckerton amp I haven't been jonesing for any new gear and couldn't really afford any anyway. I'm stopping by today though, because I finally made the switch from the 8610 opamp to the ADA4627 that I bought from a forum member way back in September.
I'm surprised by what a difference these new opamps make with my Grado 325is. It's a different signature for sure. The resolution sounds much better to me, although I find them less mellow on the ears. I may switch back and forth a bit, but for the moment I'm really digging the increased details, as I'm hearing new things in my music. It makes me very glad I purchased an amp with opamp rolling capabilities.