I just tried my Fidelizer-powered X5iii against Fiio’s latest M9 DAP. The M9 is a huge improvement over the stock X5iii but no match against your powerful mod. 🙂

Comparing X5iii + fidelizer against X7ii however, it’s very close. The former a touch warmer. I can’t imagine if the X7ii being modded as well. Have not tried it against a SE100 yet. ^^