Dude what the hell are you talking about that is not me, i am grizzly02, i have never had the amp for sale ever? Get your facts straight, I have no idea who that is.
I am in cenral NJ Edison area. I really do not know about the OEM ones. But i can tell you the $700 ES-07 sevens i just bought do not sound all that different. These are the extended range midbass drivers. They have very very good midbass and extended midrange response. Just bought the CDT ES-07 set, so you know i am partial to CDT but I can not comment on ones compared to the