So acquired a Hifiman EF5, after a couple months with it, I had the brilliant idea to plug my FA-011s in. I was quite surprised. I now know what all the fuss was about when people suggested pairing these with tubes. Granted, the EF5 is a hybrid with minimal tube interaction, but the tubes smooth out that little somethin' that makes this combo super fun.
There's not a whole lot of talk about these cans any more, anyone still diggin' em?