Hi Zarim. The Supermicro is regarded for its sinergy with the Etymoric ER4S, that gain a tube-like sound, while keeping (or even increasing) their amount of detail.
Since my experimentation with Kenwood players, equalizer and Ety ER4 and Shure E500, I would assume that the Shure gain more extention with the Supermicro, while keeping their sound signature. The Etys, instead, "absorb" the tonal balance of what you use to feed them. I'd like to use a Xin Supermicro, and if I ever bought it, I'd use the ER4 with it, for this reason.
About the triple fi, I can't comment, but I'm looking forward to write a lengthy comparison between the E500 and ER4, tried with different equalizer settings.
For what I've seen with my previous HD20GA7 and my current HD10GB7 mp3 players, the Etys show a great sinergy with "Rock" preset, while the E500 don't change much whichever eq settings I use, and are always warmer than the Etys.