I think it's the previous line, and the lowest model from that line.
I don't know **** about Stax's tho, just that I want one
140$ sounds like a nice price, but I wouldn't buy it without a listen and a look anyway. see if it's okay, if yes, go for it!
edit: no, just get it. if you don't like it, I'll trade you a joystick, a gamepad (microsoft freestyle) a broken mouse, an old walkman, an old pair of comp speakers, a voodoo graphics card, my Donald Duck collection, my Suske&Wiske collection and all my Kijk magazines since 1997 for it
oh, and it's black, the best looking Stax (excluding the Omega ofcourse).