Wow. I ran a google search on a new headphone I bought from Bozebuttons, and came across this thread.
I am every much enjoying my "new toy" phase with the SR-X and SRD-6/SB. It's interesting because my experience has been largely with dynamic headphones that, to some degree, have sonic similarities with electrostats.
I'll be honest, the SR404 and O2's never interested me, but hearing some of Stax's older offerings, I became quite curious which is why I started on this foray.
I find it interesting the early posts compare the soundstage to the UM2. Interesting but not surprising. The width of soundstage is not the strength of this Stax (unless somone raises a particuarly amazing amp or deficiency in my modest little setup.) But even though I get superior soundstaging from my dynamic headphones, there is a welcome tonality and texture to the edges of the sound that is rewarding. Yes, these are not bass monsters, but neither am I (except with new Grado GS-1000 and flats), and I find the tight bass that's here to be satisfying enough.
This is very curious indeed. I'm on a trip to Japan soon. I suppose I will have to go toe to toe with those Japanese headphiles willing to go nuts over older Stax.
Best regards,
-Jason